298,064 DRUG Drug abouse in the workplace : prevention and control : Proceedings of the 1987 Arnold O. Beckman Conference in Clinical Chemistry [January 19-21, 1987, Newport Beach Marriott]. - [Easton] : American Association for Clinical Chemistry, 1987. - 112 s. : wykr. ; 28 cm (Clinical Chemistry ISSN 0009-9147 ; vol. 33, nr 11(B), supplement issue)