000 00275nam a2200121Ia 4500
100 _aGaur/R.K & gupta S.L
942 _cBK
654 _aengineering
245 _aEngineering physics
260 _bDHANPAT RAI AND SONS
_aNew Delhi
_c1988
300 _a1125
546 _aENGLISH
999 _c23624
_d23624