--am hk  chi
++000    00000nam a2200000 a 4500
++020    |a9623729022
++090    |a540 CHU
++100 00 |aChung L.H.M.
++245 00 |a21st Century Chemistry 2 : Question Bank
++250    |a1st ed.
++260    |aHong Kong:|bJing Kung,|c2004.
++300    |a281 p.:|bill.;|c30 cm.
++690    |aChemistry_化學