Foraminifera of the Genus Siphonina and Related Genera.
Washington, D. C.: Smithsonian Institution, 1927. 6 x 9 3/4". 15 pp. Library stamp on cover. Some pages still stuck together at top. B&w illustrations. Cover sunned, slightly soiled, otherwise in very good condition. Natural history of plants. Good+ Pamphlet (Item ID: 20448)