critical habitat
U.S. Fish and Wildlife Service. 2004. Proposed designation of critical habitat for the Arkansas River Basin population of the Arkansas river shiner. Federal Register. 69(193):59859-59879.
U.S. Fish and Wildlife Service (USFWS). 1981. Determination of two New Mexico plants to be endangered species and threatened species, with critical habitat. Federal Register 46(12): 5730-5733.
Industial Econimocs, Incorporated. 2002. Summary Tables of Economic Costs pretaining to critical habitat designation for the Rio Grande silvery minnow.
U.S. Fish and Wildlife. 2003. Designation of critical habitat for the Rio Grande Minnow, Final Environmental Impact Statement.
U.S. Fish and Wildlife Service (USFWS). 1985. Final rule to determine Astragalus humillimus to be endangered. Federal Register 50(124): 26568-26572.
Industrial Economics, Incorporated and Brookshire, McIntosh, and Associates. 2003. Final economic analysis of critical habitat designation for the Rio Grande silvery minnow. Report for the Division of Economics, U.S. Fish and Wildlife Service.
United States Fish and Wildlife Service (USFWS). 21 March 1994. Endangered and threatened wildlife and plants; Critical habitat for four colorado river endangered fishes; final rule. Federal Register 59(54):13375-13400.
United States Fish and Wildlife Service. 2003. Endangered and threatened wildlife and plants; designation of critical habitat for the Mexican spotted owl. . 5 p.
U.S. Fish and Wildlife Service. 2002. Endangered and threatened wildlife and plants; Listing the Gila chub as endangered with critical habitat; Proposed rule. Federal Register. 67(154):51948-51985.
U.S. Fish and Wildlife Service (USFWS). 6 September 2001. Proposed endangered status for the Sacramento Mountains Checkerspot Butterfly and proposed designation of critical habitat. Federal Register 66(173):46575-46595.