00289nam a2200109Ia 450000500170000000800410001702000140005808200120007210000160008424500280010026000510012820250107154601.0241216s9999||||xx |||||||||||||| ||und||  a716703513  a520 HOY  aHOYLE, Fred 0aAstronomy and Cosmology  aSan FranciscobW.H. Freeman and Company.c1975