http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Log and lumber grades as indicators of wood quality in 20- to 100-year-old Douglas-fir trees from thinned and unthinned stands
Pacific Northwest Research Station (Portland, Or.)
Available via Internet from the Forest Service web site (PDF only). Address as of 07/19/01: http://www.fs.fed.us/pnw/pubs/gtr510.pdf; current access is available via PURL.
Includes bibliographical references (pages 20-22).