@book{bhlitem35979, title = {Circular / U.S. Fish and Wildlife Service }, volume = {no. 91 (1960)}, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/35979}, note = {https://www.biodiversitylibrary.org/bibliography/8098}, publisher = {Washington: U.S. G.P.O., 1941-1970}, author = {U.S. Fish and Wildlife Service}, year = {1960}, pages = {24}, keywords = {Fisheries|United States|Wildlife conservation}, }