Nuttonson, M. Y. (1949). Ecological crop geography of Germany and its agro-climatic analogues in North America.
Chicago-Zitierstil (17. Ausg.)Nuttonson, Michael Y. Ecological Crop Geography of Germany and Its Agro-climatic Analogues in North America. Washington, DC, 1949.
MLA-Zitierstil (9. Ausg.)Nuttonson, Michael Y. Ecological Crop Geography of Germany and Its Agro-climatic Analogues in North America. 1949.
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