19 pages : illustrations (some color), color maps ; 28 cm
OCLC
ocm45410668
"September 2000."
Cover title.
Includes bibliographical references (pages 16-19).
Available via Internet from the Forest Service web site (PDF files only). Address as of 01/19/01: http://www.fs.fed.us/pnw/pubs/gtr495.pdf; current access is available via PURL.