TY - JOUR TI - Cocaine use in a national sample of US youth NLSY: Ethnic patterns, progression, and predictors T2 - Substance use & misuse VL - 32 IS - 12/13 EP - 1762 AU - Kandel, Denise B. A2 - Davies, Mark PY - 1997 LA - English SP - 1757 SN - 1082-6084 ER -