Paladin Press, 1976. New Rev. and Enl. Edition. Hardcover: 420 pages. Book and Dust Jacket are in very good condition with a few very minor tears to the edges of the dust jacket as well as some minor canting to the spine.
Prentice Hall, 1997. 1st edition. Paperback: 672 pages. Book is in good condition with some minor wear to the cover as well some markings to the exterior page edges with the previous owners name written in pen.
Littleton, Colorado: Society for Mining, Metallurgy, and Exploration, 2002. 8vo. Carly. 448 ppgs. No writing, highlighting or creases. Binding tight. Light soiling to edges of the textblock. Cover shows light edgewear.