Reprinted from the proceedings of the 3rd National U.S. Fish and Wildlife Service Geographic Information Systems Workshop, May 3-5, 1992, La Crosse, Wisconsin.
"February 1993"--Cover.
Includes bibliographical references.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., [1997] 1 microfiche : negative.