Shadish, William R., Jr.
Foundations of program evaluation : theories of practice - Newbury Park, Calif. : Sage, 1991 - 529
EVALUTION RESEARCH (SOCIAL ACTION PROBLEMS)
H62 / S522F
Foundations of program evaluation : theories of practice - Newbury Park, Calif. : Sage, 1991 - 529
EVALUTION RESEARCH (SOCIAL ACTION PROBLEMS)
H62 / S522F