Disenos experimentales y cuasiexperimentales en la investigacion social /

by Campbell, Donald Thomas 1916-1996, Campbell, Donald Thomas 1916-1996
Published 1988

Experimental and quasi-experimental designs for research /

by Campbell, Donald Thomas 1916-1996, Campbell, Donald Thomas 1916-1996, Stanley, Julian Cecil 1918-
Published 1963

Diseños experimentales y cuasiexperimentales en la investigacion social /

by Campbell, Donald Thomas 1916-1996, Campbell, Donald Thomas 1916-1996, Stanley, Julian Cecil 1918-
Published 1973

Psychological anthropology : approaches to culture and personality. /

by Aberle, David Friend 1918-2004
Published 1961