000 00298 a2200121 4500
080 _a54
_bH 816 C
245 1 _aChallenge of chemistry
_cby P.A. Horrigan
260 _aNew York
_bMcGraw-Hill Book Co.
_c1970
650 _aChemistry
100 1 _aHorrigan, P.A.
_d
300 _a243 p.
901 _a107559
999 _c28180
_d28180