http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Effects of experimental removal of barred owls on population demography of northern spotted owls in Washington and Oregon
1 online resource (iv, 23 pages) : illustrations, maps.
"Prepared in cooperation with U.S. Fish and Wildlife Service, Bureau of Land Management, and U.S. Forest Service."
Includes bibliographical references (pages 18-19).
U.S. Geological Survey open-file report ; 2017-1040