4 treff

Industrialization of U.S. agriculture : an interpretive atlas
Howard F. Gregor
Bok Engelsk 1982
An agricultural typology of California
Howard F. Gregor
Bok Engelsk 1974
Geography of agriculture : themes in research
Howard F. Gregor
Bok Engelsk 1970
Environment and economic life : an economic and social geography
Howard F. Gregor
Bok Engelsk 1963