000 00492nam a22002177a 4500
015 _a0010396
016 _aCHE
020 _a9971418207
041 _aENG
080 _a570
100 _aCheng , Tong wai
_95570
245 _aChemistry :
260 _aFereral :
_bSingapore ;
_c1969.
300 _a77 p ; 21cm .
_b01
310 _a2024-08-29
852 _aL
999 _c8688
_d8688