Evaluation of models and data for assessing whooping crane habitat in the central Platte River, Nebraska [electronic resource] / by Adrian H. Farmer ... [et al.].
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2005.
Mode of access: Internet at the USGS web site. Address as of 9/2/08: http://www.fort.usgs.gov/Products/Publications/21401/21401.pdf ; current access is available via PURL.