TY - JOUR T1 - Culturally competent treatment of African American clients among a national sample of outpatient substance abuse treatment units AU - Howard, Daniel L. PY - 2003 DO - 10.1016/S0740-5472(02)00348-3 SP - 89 - JO - Journal of Substance Abuse Treatment VL - 34 IS - 2 SN - 0740-5472 ER -