00277nam a2200109Ia 4500008004000000082001800040100002000058245002800078260003400106300000800140650001900148210210b1979   xxu||||| |||| 00| 0 eng d  a823.0876 ASIS  aASIMOV (Issac).  aStars in their courses.  aN YbGranada Publishingc1979  a222  aAsimov Stars