http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
an annual assessment of regional timber output
Northeastern Forest Experiment Station (Radnor, Pa.)
United States Department of Agriculture, Forest Service.
Pulpwood production and receipts in the Northeast
U.S.D.A. Forest Service resource bulletin NE
U.S. Dept. of Agriculture, Forest Service, Washington, D.C. 20013