000 00267nam a2200121Ia 4500
654 _aMATH
100 _aChowduri, N.
245 _aPlane Menswration
260 _bIndian Book Distric Company
_aKolkata
_c1972
082 _bCHO
300 _a71p.
999 _c29336
_d29336
041 _aeng
546 _aText in English
300 _c23 cm.