http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nitric acid promotes pine seed germination
Southern Forest Experiment Station (New Orleans, La.)
Mode of access: Internet from the Forest Service web site. Address as of 7/19/07: http://www.srs.fs.usda.gov/pubs/rn/rn%5Fso281.pdf ; current access is available via PURL.