000 00273nam a2200121Ia 4500
008 230303s9999 xx 000 0 und d
041 _aeng
082 _a530.4 DEV
100 _aDEVRAJ SINGH
245 _aENGINEERING PHYSICS VOL-II
260 _aNEW DEHLI
365 _cRS
999 _c187588
_d187588