00815nam a2200241Ia 4500 40460 BIBL 20160527200323.0 741001s1975 maua 00010 eng 74022414 12.95 EVLG 372.35 S957i c1 LB1585 .S88 372.3/5/044 372.35 S957i Sund, Robert B. 175907 Local Investigate and discover elementary science lessons Robert B. Sund, Bill W. Tillery, Leslie W. Trowbridge. Boston Allyn and Bacon [1975] xxii, 362 p. ill. 23 cm. Science Study and teaching (Elementary) 166868 Local Tillery, Bill W., joint author. 179828 Local Trowbridge, Leslie W. joint author. 285001 Local 30943 30943 0 0 0 372_350000000000000_S957I 0 evl 298720 10 10 1 2016-05-27 55719 0 372.35 S957i 80000000569007 2016-05-27 00:00:00 r:40460 z:NCC:D 6