00527nam a2200169Ia 450000500170000000800460001703700120006304000200007504100130009508400190010824500460012724500580017326000510023130000130028249000410029554600210033620250508154512.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a574, NCEqFEDL 0aBiological science: An inquirty into life 0cNational Council of Educational Research and Training  aNew York, USAbHarcourt, Brace and Worldc1964  aix,120p.  aBiological sciences curriculum study  aTeacher's Manual