Yazar
howard f gregor
6 cilt bulundu.
Cilt sonuçları
Industrialization of U.S. agriculture
Howard F. Gregor · Taylor & Francis Group
259 sayfa · 1982
Agriculture / Economic aspects of Agriculture / Farm mechanization / Large Farms / Aspect économique
Environment and economic life
Howard F. Gregor · D. Van Nostrand Company, Inc.
498 sayfa · 1963
Economic geography / Economische geografie / Wirtschaftsgeografie / Géographie économique / Géographie sociale
An agricultural typology of California
Howard F. Gregor · Akadémiai Kiadó
106 sayfa · 1974
Agricultural geography / Agriculture / Agriculture, united states