Syllabus of Pennsylvania Geology and Mineral Resources (Topographic and Geologic Survey Bulletin G-1)
Commonwealth of Pennsylvania Department of Internal Affairs, 1931. Wraps. 8vo, 159 pp., 117 figs., 2 plates including foldout color map. Chips at head and heel of spine; wrappers rubbed, edgeworn and a bit soiled; corners lightly bumped, page edges tanned.