Earthquakes and Related Sources of Evidence on the Earth's Internal Structure.
Washington, D. C. Smithsonian Institution, 1959. Pamphlet. 6 x 9 3/4". 13 pp. B&W illustrations. Cover slightly sunned. Geological analysis.
Cellar Stories Bookstore
Washington, D. C. Smithsonian Institution, 1959. Pamphlet. 6 x 9 3/4". 13 pp. B&W illustrations. Cover slightly sunned. Geological analysis.