00317nam a2200121Ia 4500008004100000082001800041245003500059245001600094260003000110260000900140300001400149526003200163250428s9999 xx 000 0 und d a540 B82c 1965 0aCritical readings in chemistry 0cBrown, M.G. bHoughton Mifflin Company. c1965 a91 pages. a500 Natural Sciences & Math