http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Floral and Nursery Plants Research Unit.
U.S. National Arboretum Plant Introduction.
Title from title screen (viewed on Aug. 1, 2006).
Mode of access: Internet from USNA web site. Address as of 5/29/07: http://www.usna.usda.gov/Newintro/Syringa_Declaration.pdf; current access available via PURL.