http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Genetic gains from tree improvement of ponderosa pine in southern Idaho
Intermountain Forest and Range Experiment Station (Ogden, Utah)
Southern Idaho Tree Improvement Committee
Gerald E. Rehfeldt ; [prepared for the Southern Idaho Tree Improvement Committee].
USDA Forest Service research paper INT ; 263