00311nam a2200109Ia 4500008004100000040002500041082001200066100004700078245002500125260004300150300000800193230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a550 R14  aRamsey , William L. and Raymond A. Burkley 0aModern earth science  bHOLT, RINEHART AND WINSTON, INC.c1961  a664