by National Institute on Drug Abuse. Community and Professional Education Branch
1993 64 pages eng
Reader not loading? Open it on Archive.org instead.
David D. Royse, Bruce A. Thyer, Deborah K. Padgett et al.
2001
Mark W. Lipsey, Howard E. Freeman, Peter H. Rossi
2003
Joint Committee on Standards for Educational Evaluation.
1994
Shelley C. Safian
2009
David M. Fetterman, Abraham Wandersman
1996
Paul R. Niven