00267nam a2200109Ia 4500008004100000041000800041082002000049100001700069245005200086250001000138260000900148211209s1926    xx            000 0 und d  aeng  a515.243 N26 BRO  aBROMWICH T J  aINTRODUCTION TO THE THEORYF OF INFINITE SERIES   a2 ed.  c1926