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by Enrique Anderson Imbert (Harvard University); Eugenio Florit (Barnard College, Columbia University)
by Thomas H. Wonnacott (University of Western Ontario); Ronald J. Wonnacott (University of Western Ontario)
by Crummett, William P.; Western, Arthur B.
by Bock, R. Darrell; University of California, Los Angeles Center for Research in evaluatio; Norc (Organization)
by Kibby, Michael R.; Hartley, J. Roger; Kibby, Michael R.
by Foster; Ralph S
by Paoletti, M. G.; Pimentel, D.
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