Hartman, Howard L.

Introductory Mining Engineering Hartman, Howard L. 2002 Introductory mining engineering Hartman, Howard L. 2002 Introductory mining engineering Hartman, Howard L. 2002 Introductory mining engineering Hartman, Howard L. 2002 Introductory mining engineering Hartman, Howard L. 1987 Introductory Mining Engineering Hartman Howard L 1987 Introductory mining engineering Hartman, Howard L. 1987 Mine ventilation and air conditioning Author not listed 1997 Mine ventilation and air conditioning Hartman, Howard L. 1961 SME mining engineering handbook edited by Howard L. Hartman, Scott G. Britton, Jan M. Mutmansky, Donald W. Gentry, W. Joseph Schlitt, Michael Karmis and Madan M. Singh 1992 Surface mining Eugene P. Pfleider, George B. Clark, Howard L. Hartman, and Adolph Soderberg.(editors) 1968