00299nam a22001217a 4500015000900000041000800009080000800017100001800025100001800043245004200061260006700103300000700170  a1307  aENG  a510  cM.M.L.Oblitas  aM.M.L.Oblitas  aCERTIFICATE CHEMISTRY MULTIPLE CHOICE  aHeinemann Educational BooksbHeinemann Educational Booksc1976  a89