000 00238 a2200097 4500
020 _a9789352533572
100 _aDASS, H.K. / VERMA, RAMA
245 _aMATHEMATICAL PHYSICS
250 _a8
260 _bSCHAND AND COMPANY LTD., NEW DELHI
_c2019
999 _c84950
_d84950