00338nam a2200121Ia 4500008004100000040002500041082001600066100004200082245003000124250001900154260003500173300000800208230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a338.521 W33  aWatson , Donald S. and Mary A. Holman 0aPrice theory and its uses  aFOURTH EDITION  bHOUGHTON MIFFLIN COMPANYc1977  a445