Ecological Study of Aquatic Midges and Some Related Insects with Special Reference to Feeding Habits.
Washington DC: Government Printing Office, 1922. 4to. 1-61 pp. Front cove has light soiling to spine and top edges and a stamp from previous owners. Rear cover is lightly stained w/ red, and bottom left corner has small tear. Study of feeding habits by author is an effort to help group larvae into similar groups. Paper is part of the Vol. XXXVIII Bulletin of the Bureau of Fisheries. Very Good Booklet (Item ID: 45840)