Ball A Gordon Ed. Size, structure, and future of farms Ball A Gordon Ed.; Heady Earlo Ed. - Iowa Iowa State University Press 1971 - viii, 404p. Bib chapterwise cm. - Iowa State University, Center for Agriculture and Rural Development, Publication . ISBN: 0818814405 Source: General Book Subjects--Topical Terms: Agriculture Insdustry Dewey Class. No.: X9(J).73.N7, L1