00304nam a2200109Ia 4500008004100000040002500041082001200066100002400078245005400102260003000156300000800186230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a330 H94  aHurwitz, Howard L.  0aUsing economics : principles, institution, issues  bOxford Book Companyc1975  a582