Lancaster, PA: Economic Geology, 1938. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: Economic Geology, 1939. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: Economic Geology, 1948. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: Economic Geology, 1947. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: Economic Geology, 1946. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: Economic Geology, 1949. softcover, 9.75" x 7", illustrated, articles, reviews, scientific communications, discussions, scientic notes and news. More
Lancaster, PA: The Economic Geology Publishing Company, 1952. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DF6. More
Lancaster, PA: The Economic Geology Publishing Company. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DE5. More
Lancaster, PA: The Economic Geology Publishing Company. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DD7. More
Lancaster, PA: The Economic Geology Publishing Company. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DB7. More
Lancaster, PA: The Economic Geology Publishing Company, 1955. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DG3. More
Lancaster, PA: The Economic Geology PUblishing Company. softcover, binding good, pages clean. articles pertaining to geology, earth science and mining DH3. More
Lancaster, PA: The Economic Geology Publishing Company. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DH3. More
Lancaster, PA: The Economic Geology Publishing Company. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DG2. More
Lancaster, PA: The Economic Geology Publishing Company, 1944. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DF6. More
Lancaster, PA: The Economic Geology Publishing Company, 1943. softcover, binding good, pages clean. articles pertaining to mining, earth science and geology DE1. More
Lancaster, PA: The Economic Geology Publishing Company, 1953. softcover, front pages dog eared, name on cover, 337 - 430 pages. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1953. September - October, 1953. softcover, name on cover, 430 - 512 pages. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1952. August, 1952. softcover, front pages dog eared, name on cover, 481 - 582 pages. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1952. softcover, 583 - 684 pages, pages very good. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1952. November 1952. softcover, name on cover, 685 - 782 pages, pages very good. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1952. December, 1952. softcover, name on cover, 783-863 pages, pages very good. articles pertaining to geology DR4. More
Lancaster, PA: The Economic Geology Publishing Company, 1954. November 1954. softcover, binding good, pages clean, chipping along edges 675-814 pages. articles pertaining to geology, mining and earth science DC3. More
Lancaster, PA: The Economic Geology Publishing Company, 1954. September - October 1954. softcover, binding good, pages clean, chipping along edges 555-674 pages. articles pertaining to geology, mining and earth science DC3. More
Lancaster, PA: The Economic Geology Publishing Company, 1954. August 1954. softcover, binding good, pages clean, chipping along edges 451-554 pages. articles pertaining to geology, mining and earth science DC3. More