Land Use and Stream Nitrogen Concentrations in Agricultural Watersheds Along the Central Coast of California

por Los Huertos, Marc, Gentry, Lowell E., Shennan, Carol
Publicado 2001

Estimated Historical and Current Nitrogen Balances for Illinois

por David, Mark B., McIsaac, Gregory F., Royer, Todd V., Darmody, Robert G., Gentry, Lowell E.
Publicado 2001