00493nam a2200157 a 450000500170000000800410001704100080005808200140006610000290008024500590010926400310016830000230019950000770022265000130029965000230031220260717090952.0260717s1974    ii            000 0 eng d  aeng04a808.838761 aAsimov, Isaac, 1920-199214aThe stars in their courses /cAsimov, Isaac, 1920-1992 1bPanther books ltd.,c1974.  axi, 199 p. ; 21 cm  a"Essays ... reprinted from the Magazine of fantasy and science fiction." 4aScience. 4aScience and state.