--headings beginning with the word Drug; also individual drugs and groups of drugs, e.g. Narcotics; also subdivision Therapeutic use under individual chemicals and groups of chemicals, e.g. Copper--Therapeutic use; Insulin--Therapeutic use; and subdivision Drug use under names of individual persons and under classes of persons and ethnic groups
--subdivision Formulae, receipts, prescriptions under individual branches and systems of medicine, e.g. Dermatology--Formulae, receipts, prescriptions; Medicine, Chinese--Formulae, receipts, prescriptions; and subdivision Medicine--Formulae, receipts, prescriptions under ethnic groups
