00320nam a2200121Ia 4500008004100000082001500041100001700056245005500073260003800128300000800166942000700174999001700181190709s9999    xx            000 0 und d  a517.21 B73  aNand, Brahma 0aConvergence of infinite series & infinite products  aMeerutbKedar nath ram nathc1961  a304  cBK  c36487d36487