Quasi-experimental approaches: testing theory and evaluating policy.
CAPORASO (James A) and ROOS (Leslie L).
Quasi-experimental approaches: testing theory and evaluating policy. - USA. Northwestern University Press., 1973 - xix,368
300.72 CAPQ
Quasi-experimental approaches: testing theory and evaluating policy. - USA. Northwestern University Press., 1973 - xix,368
300.72 CAPQ
