00406nam a2200133Ia 4500008004100000082001500041100001900056245003300075260004500108300000800153942000700161952008900168999001500257190709s9999    xx            000 0 und d  a512.89 H18  aHalmos, Paul R 0aLectures on boolean algebras  aNew yorkbD Van nostrand company ic1963  a147  cBK  00104070aRIEBPLbRIEBPLd2019-07-09l0p9718r2019-07-09 00:00:00w2019-07-09yBK  c3283d3283