000 00317nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c600/-
040 _aET
100 _aAVADHANULU M N
245 0 _aENGINEERNING PHYSICS
260 _bS.CHAND & SONS
_aDELHI
300 _a1189
500 _a21234
942 _cBK
999 _c27449
_d27449