RT Article T1 Random drug tests at work: The probability of identifying frequent and infrequent users of illicit drugs JF Journal of addictive diseases VO 14 IS 3 SP 1 OP 17 A2 DuPont, Robert L. 1936- A2 Griffin, David W. A2 Siskin, Bernard R. A2 Shiraki, Sarah A2 Katz, Edward LA English YR 1995 UL https://krimdok.uni-tuebingen.de/Record/1639395873 K1 Drogentests K1 Arbeitsplatz DO 10.1300/J069v14n03_01