http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
U.S. Dept. of the Interior, Fish and Wildlife Service, Bureau of Sport Fisheries and Wildlife; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Many numbers issued in revised editions.
Numbers 1-49 issued by U.S. Fish and Wildlife Service; no. 50- by the Bureau of Sport Fisheries and Wildlife.