00303nam a2200109Ia 4500008004100000040002500041082001200066100004200078245003000120260003500150300000800185230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a520 B73  aBrandt, John C. and Stephen P. Moran  0aNew horizons in astronomy  bW.H. Freeman and Companyc1972  a496