Quasi-experimentation :
Cook, Thomas D.
Quasi-experimentation : design & analysis issues for field settings / Thomas D. Cook, Donald T. Campbell. - Boston : Houghton Mifflin Co., c1979. - xii, 405 p. : ill. ; 23 cm.
Includes bibliographical references and index.
81081077
Social sciences.--Research.
Social sciences.--Fieldwork.
H62 / .C5857 1979
Quasi-experimentation : design & analysis issues for field settings / Thomas D. Cook, Donald T. Campbell. - Boston : Houghton Mifflin Co., c1979. - xii, 405 p. : ill. ; 23 cm.
Includes bibliographical references and index.
81081077
Social sciences.--Research.
Social sciences.--Fieldwork.
H62 / .C5857 1979