@article{130333, author = {Potter, Beverly A. and Orfali, Sebastian.}, url = {http://library.usi.edu/record/130333}, title = {Drug testing at work : a guide for employers & employees /}, publisher = {Ronin Pub.,}, recid = {130333}, pages = {x, 230 p. :}, address = {Berkeley, CA :}, year = {1990}, }