00350nam a2200133 a 450000500170000000800410001704100080005808200110006610000170007724500410009425000120013526400430014730000260019020260717092736.0260717s2011    ii            000 0 eng d  aeng04a530.151 aGupta, B. D.10aMathematical Physics /cGupta, B. D.  a4th ed. 1aNew Delhi :bVikas Publishing,cc2011.  axvi, Sev. p. ; 24 cm.