Description
Item Description:Cover title.
"December 2002."
Physical Description:108 pages : illustrations ; 28 cm.
Available via Internet from the USDA Web site. Address as of 3-14-03: http://www.fs.fed.us/pnw/pubs/gtr561.pdf; current access is available via PURL.
Bibliography:Includes bibliographical references (pages 105-108).