00525nam a2200169 a 4500001000500000005001700005008004100022050002000063100001900083245012300102260003000225300002300255440002900278500002000307650001500327650001300342156420140414131850.0010417s19uu    xx            00    eng d  aM 540bG36 1992  aGifford, Clive  aEssential Chemistry :bkey laws & uses summarized /cClive Gifford ; illustrated by Sean Wilkinson and Robert Walster.  aLondon :bUsborne,c1992.  a64 p. : ill. ; cm.  aUSBORNE essential guides  aIncludes index.  aChemistry.  aScience.