Juvenile tree growth on some volcanic ash soils disturbed by prior forest harvest [electronic resource] / J. Michael Geist, John W. Hazard, and Kenneth W. Seidel.
Imprint
Portland, OR : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2008]
Mode of access: Internet from the Pacific Northwest Research Station web site. Address as of 03/21/08: http://www.fs.fed.us/pnw/pubs/pnw%5Frp573.pdf; current access is available via PURL.
