00433nam a2200157Ia 450000500170000000800460001703700120006304000210007504100130009608400210010910000170013024500360014726000450018330000120022865000350024020250508154951.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a372.3, GEGqFEDL  aGega Peter C 0aScience in elementary education  aNew York, USAbJohn Wiley and Sonsc1966  ax,451p.  aElementary education - Science