000 00276 a2200109 4500
020 _a9789352836109
100 _aRAISINGHANIA, M. D.
245 _aORDINARY AND PARTIAL DIFFERENTIAL EQUATIONS
250 _a20
260 _bSCHAND AND COMPANY LTD., NEW DELHI
_c2021
942 _cBK
999 _c89355
_d89355