http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National bentgrass test-1989 (fairway/tee)
National Turfgrass Evaluation Program (U.S.)
National Turfgrass Evaluation Program ; sponsored by United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center and Maryland State Turfgrass Council.
National Turfgrass Evaluation Program (Series) ; no. 93-8