http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Agricultural conservation program accomplishments
Agricultural conservation program accomplishments (Washington, D.C. : 1969)
Agricultural Stabilization and Conservation Service.
[prepared by Data Management Division, Agricultural Stabilization and Conservation Service, United States Department of Agriculture].
Vol. for 1968 prepared by: U.S. Dept. of Agriculture. Agricultural Stabilization and Conservation Service, Data Management Division; 1969 by: U.S. Dept. of Agriculture. Agricultural Stabilization and Conservation Service, Data Division.
Agricultural conservation program, summary (Washington, D.C. : 1968)
Agricultural conservation program, practice accomplishments by states