000 00265nam a2200109Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aGupta S L&Amp; Sanjeev Gupta
245 0 _aIit Physics
260 _bJaiprakash Nath &co
_c1998
300 _a1616p
942 _cREF
999 _c36464
_d36464