00262nam a2200097Ia 4500003000500000008004100005040001900046100002100065245004100086260003700127PILC220421s2001    xx            000 0 und d  cEARIST LIBRARY  aClayton, Gary E. 0aEconomics, Principles and Practice /  aNew York,bMc Graw Hill :c2001.