On Some Species of Chinese Earthworms With Special Reference to Specimens Collected in Szechwan by Dr. D .C. Graham.
Washington, D. C.: Smithsonian Institution, 1939. 6 x 9 3/4". 101 pp. Tops of some pages still joined. B&w illustrations. Library stamp on cover. Cover marked along bottom front, slightly wrinkled, corners slightly bent. Study of earthworms. Good+ Pamphlet (Item ID: 20398)