00362nam a2200121Ia 4500082001900000100001900019245007900038260003400117300001400151490006500165500000500230700000500235  a330.1bW822.ET  aWithagen, Cees  aEconomic theory and international trade in natural exhaustible resourcesb  aBerlinbSpringer-Verlagc1985  avi, 172p.  aLecture notes in Economics and Mathematical systems v v. 25  a  a