000 00252nam a2200109Ia 4500
008 200129s9999 xx 000 0 und d
082 _aGUP-E
100 _aGUPTA, S.K.
245 0 _aENGINEERING PHYSICS
260 _bKRISHNA PRAKASHAN
_c2012
942 _cBB
999 _c1443
_d1443