00317nam a2200121Ia 4500082002000000100003200020245003000052260003400082300000900116490003800125500000500163700002700168  a515.42bP523.CS  aPfanzagl, J. and Pierlo, W.  aCompact systems of setsb  aBerlinbSpringer-Verlagc1966  a48p.  aLecture notes in Mathematicsv 16  a  aPierlo, W. ; jt. auth.