--am si  eng
++000    00000nam a2200000 a 4500
++020    |a9810512538
++090  2 |a540.37 CHO
++100 1  |aChoy, Chris.
++245 10 |aO-Level effective guide. Chemistry /|cChris Choy, Thomas Cheong.
++260    |aSingapore :|bCosmic Services,|c2004.
++300    |a1 v. :|bill. ;|c26 cm.
++650    |aChemistry -- Study and teaching.
++690    |aChemistry.
++700 1  |aCheong, Thomas.