Handbook in research and evaluation :
Isaac, Stephen
Handbook in research and evaluation : for education and behavioral sciences / Stephen Isaac and William B. Michael. - 2nd ed. - California : EDITS, c1971, c1981. - 234 p. : illus.
0912736259
Evaluation.
Research.
Handbook in research and evaluation : for education and behavioral sciences / Stephen Isaac and William B. Michael. - 2nd ed. - California : EDITS, c1971, c1981. - 234 p. : illus.
0912736259
Evaluation.
Research.
