Mining Symposium Duluth, Minn, University of Minnesota, Duluth Branch, American Institute of Mining and Metallurgical Engineers. Minnesota Section, Pfleider, E. P., & Berger, F. E. (1968). Twenty-ninth annual mining symposium and the Forty-first annual meeting of the Minnesota Section, AIME, January 15-17, 1968, Duluth, Minnesota. University of Minnesota.
Chicago Style (17th ed.) CitationMining Symposium Duluth, Minn, Duluth Branch University of Minnesota, American Institute of Mining and Metallurgical Engineers. Minnesota Section, Eugene P. Pfleider, and Frederick E. Berger. Twenty-ninth Annual Mining Symposium and the Forty-first Annual Meeting of the Minnesota Section, AIME, January 15-17, 1968, Duluth, Minnesota. Minneapolis: University of Minnesota, 1968.
MLA引文Mining Symposium Duluth, Minn, et al. Twenty-ninth Annual Mining Symposium and the Forty-first Annual Meeting of the Minnesota Section, AIME, January 15-17, 1968, Duluth, Minnesota. University of Minnesota, 1968.