000 00206nam a2200097Ia 4500
100 _aUPPAL, M.M.
245 _aENGINEERING CHEMISTRY
260 _aDELHI
_bKHANNA PUB.
_c1960
300 _a374
942 _2ddc
_cBB
999 _c72062
_d72062