000 00280 a2200109 4500
020 _a9788173195198
100 _aAMARNATH, T.
245 _aAN ELEMENTARY COURSE IN PARTIAL DIFFERENTIAL EQUATIONS
250 _a2
260 _bNAROSA PUBLISHING HOUSE, NEW DELHI
_c2020
942 _cBK
999 _c89364
_d89364