Population trends and habitat occurrence of forest birds on southern national forests, 1992-2004 [electronic resource] / Frank A. La Sorte ... [et al.].
Imprint
Newtown Square, PA : U.S. Dept. of Agriculture, Forest Service, Northern Research Station, [2007]
Mode of access: Internet from the Northern Research Station web site. Address as of 7/30/07: http://www.nrs.fs.fed.us/pubs/gtr/gtr%5Fnrs9.pdf; current access available via PURL.
Note
Title from title screen (viewed on July 30, 2007).
