Also available via Internet from the USFS Web site (PDF file). Address as of 5-7-02: http://www.fs.fed.us/rm/pubs/rmrs%5Fp20.pdf; current access is available via PURL.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2002. 1 microfiche : negative.