Linear programming methods /

by Heady, Earl O. (Earl Orel), 1916-1986
Published 1958

Economics and the environment : impacts of erosion restraints on crop production in the Iowa River Basin /

by Alt, Klaus F., Heady, Earl O. (Earl Orel), 1916-1986
Published 1977

Future farm programs ; comparative costs and consequences /

by Heady, Earl O. (Earl Orel), 1916-1986
Published 1972

A model for regional agricultural analysis of land and water use, agricultural structure and the environment : a documentation /

by Nicol, Kenneth J.
Published 1975

Short and long-term analysis of the impacts of several soil loss control measures on agriculture /

by English, Burton C.
Published 1980

Potential effects of policy alternatives on regional and national soil loss /

by Daines, David Rainey
Published 1980

Models of soil loss, land and water use, spatial agricultural structure, and the environment /

by Nicol, Kenneth J., Heady, Earl O. (Earl Orel), 1916-1986, Madsen, Howard C., 1944-
Published 1974