http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Provisional tree seed zones and transfer guidelines for Alaska
Pacific Northwest Research Station (Portland, Or.)
1 online resource (35 pages) : illustrations, maps.
Title from title screen (viewed Feb. 26, 2014).
Includes bibliographical references (pages 31-35).