00343nam a2200121Ia 4500008004100000040003000041082001300071100001800084245004800102260004400150300001100194650001600205190302s9999||||xx |||||||||||||| ||und||  aKharagpur College Library  a531bNIY  aPradip Niyogi  aGatibidyabKanar Rijurekh o Samataliya Gati  bPaschmbanga Rajjo PustakaKolkatac1975  a253 p.  aMathematics