00289nam a2200121Ia 4500008004100000041000800041082001200049100001200061245003000073260002800103300001900131999001700150241015s9999    xx            000 0 und d  aeng  a121 HET  aStephen  aKey Thinking Epistemology  bContinuumaLondonc2012  a253;. P. 22 cm  c41630d41630