00339nam a2200133Ia 4500008004100000040002500041082001400066100001700080245003200097260004600129300001000175942000700185999001300192230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a307.1 G65  aGordon, Hugh 0aExploring a space community  bDouglas & McIntyre (Education) Ltd.c1983  a109p.  cBK  c202d202