000 00250nam a2200109Ia 4500
005 20251103125338.0
008 251103s9999 xx 000 0 eng d
100 _aSaxena H.C.&Sisodia M.L.
245 0 _aPhysics P.M.T
260 _bRBD
942 _2ddc
_cBK
999 _c1074
_d1074