RT Book T1 Karl Popper T2 NachGedacht A1 Schröder, Jürgen 1960- LA German PP Paderborn PB Mentis YR 2006 UL https://ixtheo.de/Record/508392519 NO Literaturverz. S. 147 - 150 CN B1649.P64 SN 9783897855007 SN 3897855003 K1 Popper, Karl Raimund