R--Medicine (General)
RA--Public aspects of medicine
RB--Pathology
RC--Internal medicine
RD--Surgery
RE--Ophthalmology
RF--Otorhinolaryngology
RG--Gynecology and obstetrics
RJ--Pediatrics
RK--Dentistry
RL--Dermatology
RM--Therapeutics. Pharmacology
RS--Pharmacy and materia medica
RT--Nursing
RV--Botanic, Thomsonian, and eclectic medicine
RX--Homeopathy
RZ--Other systems of medicine
R5-920--Medicine (General)
R5-130.5--General works
R131-687--History of medicine. Medical expeditions
R690-697--Medicine as a profession. Physicians
R702-703--Medicine and the humanities. Medicine and disease in relation to history, literature, etc.
R711-713.97--Directories
R722-722.32--Missionary medicine. Medical missionaries
R723-726--Medical philosophy. Medical ethics
R726.5-726.8--Medicine and disease in relation to psychology. Terminal care. Dying
R727-727.5--Medical personnel and the public. Physician and the public
R728-733--Practice of medicine. Medical practice economics
R735-854--Medical education. Medical schools. Research
R855-855.5--Medical technology
R856-857--Biomedical engineering. Electronics. Instrumentation
R858-859.7--Computer applications to medicine. Medical informatics
R864--Medical records
R895-920--Medical physics. Medical radiology. Nuclear medicine
RA1-1270--Public aspects of medicine
RA1-418.5--Medicine and the state
RA396--Regulation of medical education. Licensure
RA398--Registration of physicians, pharmacists, etc.
RA399--Regulation of medical practice. Evaluation and quality control of medical care. Medical audit
RA405--Death certification
RA407-409.5--Health status indicators. Medical statistics and surveys
RA410-410.9--Medical economics. Economics of medical care. Employment
RA411-415--Provisions for personal medical care. Medical care plans
RA418-418.5--Medicine and society. Social medicine. Medical sociology
RA421-790.95--Public health. Hygiene. Preventive medicine
RA428-428.5--Public health laboratories, institutes, etc.
RA440-440.87--Study and teaching. Research
RA565-600--Environmental health
Including sewage disposal, air pollution, nuisances, water supply
RA601-602--Food and food supply in relation to public health
RA604-618--Parks, public baths, public carriers, buildings, etc.
RA619-637--Disposal of the dead. Undertaking. Burial. Cremation. Cemeteries
RA638--Immunity and immunization in relation to public health
RA639-642--Transmission of disease
RA643-645--Disease (Communicable and noninfectious) and public health
RA645.3-645.37--Home health care services
RA645.5-645.9--Emergency medical services
RA646-648.3--War and public health
RA648.5-767--Epidemics. Epidemiology. Quarantine. Disinfection
RA771-771.7--Rural health and hygiene. Rural health services
RA773-788--Personal health and hygiene
Including clothing, bathing, exercise, travel, nutrition, sleep, sex hygiene
RA790-790.95--Mental health. Mental illness prevention
RA791-954--Medical geography. Climatology. Meteorology
RA960-1000.5--Medical centers. Hospitals. Dispensaries. Clinics
Including ambulance service, nursing homes, hospices
RA1001-1171--Forensic medicine. Medical jurisprudence. Legal medicine
RA1190-1270--Toxicology. Poisons
RB1-214--Pathology
RB1-17--General works
RB24-33--Pathological anatomy and histology
RB37-56.5--Clinical pathology. Laboratory technique
RB57--Post-mortem examination. Autopsies
RB127-150--Manifestations of disease
RB151-214--Theories of disease. Etiology. Pathogenesis
RC31-1245--Internal medicine
RC49-52--Psychosomatic medicine
RC71-78.7--Examination. Diagnosis
Including raiography
RC81-82--Popular medicine
RC86-88.9--Medical emergencies. Critical care. Intensive care. First aid
RC91-103--Disease due to physical and chemical agents
RC109-216--Infectious and parasitic diseases
RC251--Constitutional diseases (General)
RC254-282--Neoplasms. Tumors. Oncology
Including cancer and carcinogens
RC306-320.5--Tuberculosis
RC321-571--Neurosciences. Biological psychiatry. Neuropsychiatry
RC346-429--Neurology. Diseases of the nervous system
Including speech disorders
RC435-571--Psychiatry
RC475-489--Therapeutics. Psychotherapy
RC490-499--Hypnotism and hypnosis. Suggestion therapy
RC500-510--Psychoanalysis
RC512-569.5--Psychopathology
RC512-528--Psychoses
RC530-552--Neuroses
RC554-569.5--Personality disorders. Behavior problems
Including sexual problems, drug abuse, suicide, child abuse
RC569.7-571--Mental retardation. Developmental disabilities
RC581-951--Specialties of internal medicine
RC581-607--Immunologic diseases. Allergy
RC620-627--Nutritional diseases. Deficiency diseases
RC627.5-632--Metabolic diseases
RC633-647.5--Diseases of the blood and blood-forming organs
RC648-665--Diseases of the endocrine glands. Clinical endocrinology
RC666-701--Diseases of the circulatory (Cardiovascular) system
RC705-779--Diseases of the respiratory system
RC799-869--Diseases of the digestive system. Gastroenterology
RC870-923--Diseases of the genitourinary system. Urology
RC924-924.5--Diseases of the connective tissues
RC925-935--Diseases of the musculoskeletal system
RC952-1245--Special situations and conditions
RC952-954.6--Geriatrics
RC955-962--Arctic medicine. Tropical medicine
RC963-969--Industrial medicine. Industrial hygiene
RC970-986--Military medicine. Naval medicine
RC1000-1020--Submarine medicine
RC1030-1160--Transportation medicine
Including automotive, aviation, and space medicine
RC1200-1245--Sports medicine
RD1-811--Surgery
RD1-31.7--General works
RD32-33.9--Operative surgery. Technique of surgical operations
RD49-52--Surgical therapeutics. Preoperative and postoperative care
RD57--Surgical pathology
RD58--Reparative processes after operations (Physiological)
RD59--Surgical shock. Traumatic shock
RD63-76--Operating rooms and theaters. Instruments, apparatus, and appliances
RD78.3-87.3--Anesthesiology
RD91-91.5--Asepsis and antisepsis. Sterilization (Operative)
RD92-97.8--Emergency surgery. Wounds and injuries
RD98-98.4--Surgical complications
RD99-99.35--Surgical nursing
RD101-104--Fractures (General)
RD118-120.5--Plastic surgery. Reparative surgery
RD120.6-129.8--Transplantation of organs, tissues, etc.
RD130--Prosthesis. Artificial organs
RD137-145--Surgery in childhood, adolescence, pregnancy, old age
RD151-498--Military and naval surgery
RD520-599.5--Surgery by region, system, or organ
RD651-678--Neoplasms. Tumors. Oncology
RD680-688--Diseases of the locomotor system (Surgical treatment)
RD701-811--Orthopedic surgery
RD792-811--Physical rehabilitation
RE1-994--Ophthalmology
RE75-79--Examination. Diagnosis
RE80-87--Eye surgery
RE88--Ophthalmic nursing
RE89--Eye banks
RE91-912--Particular diseases of the eye
RE918-921--Color vision tests, charts, etc.
RE925-939--Refraction and errors of refraction and accommodation
RE939.2-981--Optometry. Opticians. Eyeglasses
RE986-988--Artificial eyes and other prostheses
RE991-992--Ocular therapeutics
RF1-547--Otorhinolaryngology
RF110-320--Otology. Diseases of the ear
RF341-437--Rhinology. Diseases of the nose, accessory sinuses, and nasopharynx
RF460-547--Laryngology. Diseases of the throat
RG1-991--Gynecology and obstetrics
RG104-104.7--Operative gynecology
RG133-137.6--Conception. Artificial insemination. Contraception
RG138--Sterilization of women
RG159-208--Functional and systemic disorders. Endocrine gynecology
RG211-483--Abnormalities and diseases of the female genital organs
RG484-485--Urogynecology and obstetric urology. Urogynecologic surgery
RG491-499--Diseases of the breast
RG500-991--Obstetrics
RG551-591--Pregnancy
RG600-650--The embryo and fetus
RG648--Spontaneous abortion. Miscarriage
RG651-721--Labor. Parturition
RG725-791--Obstetric operations. Operative obstetrics
RG801-871--Puerperal state
RG940-991--Maternal care. Prenatal care services
RJ1-570--Pediatrics
RJ47.3-47.4--Genetic aspects
RJ50-51--Examination. Diagnosis
RJ52-53--Therapeutics
RJ59-60--Infant and neonatal morbidity and mortality
RJ91--Supposed prenatal influence. Prenatal culture. Stirpiculture
RJ101-103--Child health. Child health services
RJ125-145--Physiology of children and adolescents
RJ206-235--Nutrition and feeding of children and adolescents
RJ240--Immunization of children (General)
RJ242-243--Hospital care
RJ245-247--Nursing of children. Pediatric nursing
RJ250-250.3--Premature infants
RJ251-325--Newborn infants
Including physiology, care, treatment, diseases
RJ370-550--Diseases of children and adolescents
RJ499-507--Mental disorders. Child psychiatry
RK1-715--Dentistry
RK58-59.3--Practice of dentistry. Dental economics
RK60.7-60.8--Preventive dentistry
RK280--Oral and dental anatomy and physiology
RK301-493--Oral and dental medicine. Pathology. Diseases
RK501-519--Operative dentistry. Restorative dentistry
RK520-528--Orthodontics
RK529-535--Oral surgery
RK641-667--Prosthetic dentistry. Prosthodontics
RL1-803--Dermatology
RL87-94--Care and hygiene
RL95--Pathological anatomy
RL110-120--Therapeutics
RL130-169--Diseases of the glands, hair, nails
RL201-331--Hyperemias, inflammations, and infections of the skin
RL391-489--Atrophies. Hypertrophies
RL675--Chronic ulcer of the skin. Bedsores
RL701-751--Diseases due to psychosomatic and nerve disorders. Dermatoneuroses
RL760-785--Diseases due to parasites
RL790--Pigmentations. Albinism
RL793--Congenital disorders of the skin. Nevi. Moles
RM1-950--Therapeutics. Pharmacology
RM138--Drug prescribing
RM139--Prescription writing
RM146-146.7--Misuse of therapeutic drugs. Medication errors
RM147-180--Administration of drugs and other therapeutic agents
RM182-190--Other therapeutic procedures
Including acupuncture, pneumatic aspiration, spinal puncture, pericardial puncture
RM214-258--Diet therapy. Dietary cookbooks
RM259--Vitamin therapy
RM260-263--Chemotherapy
RM265-267--Antibiotic therapy. Antibiotics
RM270-282--Immunotherapy. Serotherapy
RM283-298--Endocrinotherapy. Organotherapy
RM300-666--Drugs and their actions
RM671-671.5--Nonprescription drugs. Patent medicines
RM695-893--Physical medicine. Physical therapy
Including massage, exercise, occupational therapy, hydrotherapy, phototherapy, radiotherapy, thermotherapy, electrotherapy
RM930-931--Rehabilitation therapy
RM950--Rehabilitation technology
RS1-441--Pharmacy and materia medica
RS125-131.9--Formularies. Collected prescriptions
RS139-141.9--Pharmacopoeias
RS151.2-151.9--Dispensatories
RS153-441--Materia medica
RS160-167--Pharmacognosy. Pharmaceutical substances (Plant, animal, and inorganic)
RS189-190--Assay methods. Standardization. Analysis
RS192-199--Pharmaceutical technology
RS200-201--Pharmaceutical dosage forms
RS250-252--Commercial preparations. Patent medicines
RS355-356--Pharmaceutical supplies
RS400-431--Pharmaceutical chemistry
RS441--Microscopical examination of drugs
RT1-120--Nursing
RT89-120--Specialties in nursing
RV1-431--Botanic, Thomsonian, and eclectic medicine
RX1-681--Homeopathy
RX211-581--Diseases, treatment, etc.
RX601-675--Materia medica and therapeutics
RZ201-999--Other systems of medicine
RZ201-275--Chiropractic
RZ301-397.5--Osteopathy
RZ399--Osteo-magnetics, neuropathy, etc., A-Z
RZ400-408--Mental healing
RZ409.7-999--Miscellaneous systems and treatments
Including magnetotherapy, mesmerism, naturopathy, organomic medicine, phrenology, radiesthesia
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