Understanding causes and generalizing about them

Bibliografiske detaljer
Andre forfattere:	Sechrest, Lee, Scott, Anne G. 1949- (Anne Grete), Lipsey, Mark W., Cook, Thomas D.
Format:	Bog
Sprog:	English
Udgivet:	San Francisco, Calif. Jossey-Bass c1993.
Fag:	Evaluation research (Social action programs) Social sciences > Research > Methodology.