000 00385nam a2200157Ia 4500
020 _a9789812084446
040 _cPK-LaCSN
082 _b234_T
_a500
100 _a"Tho Lai Hoong"
245 0 _aScience practical 1A
260 _c1997;
_aSingapore,
_bPan pacific publications.
300 _a109
942 _2ddc
_cTB
999 _c732233
_d732233