http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effects from atmospheric nitrogen deposition
1 online resource (approximately 26 pages) : color illustrations, color maps.
"Experience your America"--Page 4 of cover.
Great Lakes Inventory and Monitoring Network (U.S.)
Apostle Islands National Lakeshore (Wis.)
Pictured Rocks National Lakeshore (Mich.)
Saint Croix National Scenic Riverway (Wis. and Minn.)
Sleeping Bear Dunes National Lakeshore (Mich.)