RT Article T1 Comparing hair and urine assays for cocaine and marijuana JF Federal probation VO 47 IS 2 SP 59 OP 67 A1 Mieczkowski, Tom A1 Newel, Richard LA English YR 1993 UL https://krimdok.uni-tuebingen.de/Record/163936689X K1 Drogennachweis K1 Methoden