00433nam a22001457i 4500001001000000005001700010008004100027082002100068100002400089245005900113260005500172300001700227650002500244020001800269SXC02752920260819093820.0260101s2002    ii            000 0 eng d  a530.15 DEB-M222  aDebaprasanna Biswas10aMathematical methods in physics /cDebaprasanna Biswas  abNew Centrak Book Agency (P) Ltd., Kolkata,c2002  ap. ;c22 cm. 0aMathematical physics  a9783764342289