00780nam a2200241Ia 4500 40462 BIBL 20160527200324.0 740328s1974 nyua b 00110 eng 73077364 067930231X EVLG 372.35 W319t c1 LB1585 .W28 372.3/5/044 372.35 W319t Washton, Nathan Seymour 289588 Local Teaching science in elementary and middle schools Nathan S. Washton. New York D. McKay Co. [1974] xxvi, 482 p. illus. 24 cm. Bibliography: p. [441]-471. Ciencia Estudio y enseñanzas elemental. 32208 LEMB Science Study and teaching (Elementary) 166868 Local 30945 30945 0 0 0 372_350000000000000_W319T 0 evl 298739 10 10 1 2016-05-27 55723 0 372.35 W319t 80000000569031 2016-05-27 00:00:00 r:40462 z:NCC:D 6