"By John W. Henley, Richard O. Woodfin, Henry H. Haskell."
"October 1963."
Includes bibliographical references.
Mode of access: Internet from the FPL web site. Address as of 6/2/08: http://www.fpl.fs.fed.us/documnts/fplrp/fplrp9.pdf; current access available via PURL.