000 00252nam a2200109Ia 4500
008 230901s9999 xx 000 0 eng d
100 _aGOYAL (VK), PETILIYA (RN),
245 0 _aPRACTICAL CHYRICS
250 _a3
260 _bCBH
942 _2ddc
_cSCIENCE
999 _c20517
_d20517