00730nam a2200217Ia 4500 84779 BIBL 20160527203635.0 761013s1977 nyua b 00110 eng 75000047 0275225100 13.00 EVLG 372.35 E26t Edwards, Clifford H. 90596 Local Teaching elementary school science a competency-based approach Clifford H. Edwards and Robert L. Fisher. New York Praeger 1977. xv, 464 p. ill. Includes bibliographical references and index. Science Study and teaching (Elementary) 166868 Local Fisher, Robert L. joint author. 224026 Local 68781 68781 0 0 0 372_350000000000000_E26T 0 evl 364878 10 10 1 2016-05-27 135172 0 372.35 E26t 80000000620024 2016-05-27 00:00:00 r:84779 z:NCC:D 6