Items where Author is "Hurt, R. Douglas"
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Book
Hurt, R. Douglas American agriculture : a brief history. Ames : Iowa State university press. ISBN 0813823765 , 1994
Hurt, R. Douglas and Hurt, Mary Ellen The history of agricultural science and technology : an international annotated bibliography. Bibliographies on the history of science and technology. Garland reference library of the humanities . New York [etc.] : Garland. ISBN 0824071824 , 1994
Hurt, R. Douglas Agricultural technology in the twentieth century. Manhattan, Kan. : Sunflower University Press. ISBN 0897451465 , 1991