000 00288nam a2200109Ia 4500
008 180611s9999||||xx |||||||||||||| ||und||
041 _aen
100 _aWILLIAM Band
245 0 _aIntroduction to mathematical physics
260 _bNewdelhi, Affliated east west
_cpress 1960
942 _cLL
999 _c1142
_d1142