000 00257 a2200109 4500
080 _a574
_bL 668 E
245 1 _aElement of biology
_cby C.K. Levy
260 _aNew York
_bAppleton Century Crofts
650 _aBiology
100 1 _aLevy, C.K.
901 _a125479
999 _c69010
_d69010