000 00374nam a2200169Ia 4500
008 240301s9999 xx 000 0 und d
082 _a660
082 _bCHA
100 _aChawla, S.
245 0 _aText book of engineering chemistry
250 _a4th
260 _aNew Delhi
260 _bDhanpat rai and co.
260 _c2023
300 _avarious
942 _cBK
999 _c186244
_d186244