000 00544nam a2200205 a 4500
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008 991125n 000 0 u
035 _aUPN01000081387
100 _aHOFFMAN, Norman
222 _aGRADE TEACHER
245 _aHow to bring science alive in your classroom
300 _a104-107
362 _a1968 Vol. 85, no. 6, feb.
653 0 _aCIENCIAS NATURALES
653 0 _aDIFUSION CIENTIFICA
653 0 _aEDUCACION CIENTIFICA
653 0 _aENSEƑANZA
904 _aAC
_b019198
905 _aArticulo
999 _c69954
_d69954