TY - GEN AU - Rouse, Beatrice A. AU - Kozel, Nicholas J. AU - Richards, Louise G. TI - Self-report methods of estimating drug use : meeting current challenges to validity T2 - NIDA research monograph series PY - 1985/// CY - Rockville PB - NIDA KW - drugs KW - epidemiologie KW - onderzoek KW - onderzoeksmethoden ER -