00291nam a2200109Ia 4500008004100000022001800041040002500059082001700084100002300101245001800124260003900142240215s9999    xx            000 0 und d  a0-02-278210-9  aNORSU-DumcNORSU-Dum  a550/D19/1989  aDanielson, Eric W. 0aEarth Science  bMacmillan Publishing Companyc1989