The history of agriculture and the environmentDouglas Helms, Douglas E. Bowers · First published 1993Open the Tome
The United States Department of Agriculture, 1961-1989Douglas E. Bowers · First published 1993Open the Tome
A list of references for the history of agriculture in the Midwest 1840-1900Douglas E. Bowers · First published 1973Open the Tome
A list of references for the history of the farmer and the revolution, 1763-1790Douglas E Bowers · First published 1971Open the Tome
A list of references for the history of agriculture in the United States, 1790-1840Douglas E Bowers · First published 1969Open the Tome
