804,706 PROBLEMS Problems of Drug Dependence, 1976 : Proceedings of the Thirty-eighth Annual Scientific Meeting Committee on Problems of Drug Dependence Richmont Hyatt House Richmond, Va. / Assembly of Life Sciences, National Research Council, National Academy of Sciences. - Washington, D.C. : NA of S, 1976. - XIX, 1050 s. : il., wykr. ; 28 cm