Description
Item Description:"April 2008."
Electronic resource.
Physical Description:1 electronic text (x, 1223 pages) : HTML, digital, PDF file.
Format:Mode of access: Internet from the Forest Service web site. Address as of 6/8/09: http://www.nsl.fs.fed.us/nsl%5Fwpsm.html ; current access is available via PURL.
Title from title screen (viewed on May 8, 2009).
Bibliography:Includes bibliographical references and indexes.