52nd Annual Meeting of the Minnesota Section, AIME and 40th annual Mining Symposium : January 10, 11, 12, 1979, Duluth, Minnesota /

Corporate Authors: American Institute of Mining, Metallurgical and Petroleum Engineers. Minnesota Section. Meeting; Mining Symposium Duluth, Minn
Group Author: Graven, Loretta Klatt; Klatt Graven, Loretta
Published:
Call Number: TD-532/A512/1979