00339nam a22001217a 4500082002600000100001900026245004400045260002700089300001900116526003700135526003700172650000800209  a668.4bCOOcL-7, P-9.  aCook, Gordon J  aYour Guide to PlasticscJ.  Gordon Cook  aMerrow :bELBS.c1965.  a277. :c18 cm.  a0b0c0d668_400000000000000_COO  a0b0c0d668_400000000000000_COO  aMCE