title: Drug self-administration procedures: alcohol and marijuana.
authors.affiliation: Alcohol and Drug Abuse Research Center, Harvard Medical School-McLean Hospital, Belmont, Massachusetts 02178.
authors.forename: N K
authors.initials: NK
authors.lastname: Mello
mesh_terms: D000437:Alcoholism; D003216:Conditioning, Operant; D004341:Drug Evaluation / Q000379:methods; D006801:Humans; D013287:Illicit Drugs; D002189:Marijuana Abuse; D012054:Reinforcement, Psychology; D012646:Self Administration; D012907:Smoking
chemical_list: D013287:Illicit Drugs