Items where Author is "Perkins, J.A."
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Perkins, J.A. Dualism in German agrarian historiography. , 1986.
Perkins, J.A. The German agricultural worker, 1815-1914. , 1984.
Perkins, J.A. The agricultural revolution in Germany, 1850-1914. , 1981.
Perkins, J.A. Tenure, tenant right, and agriculture progress in Lindsey, 1780-1850. , 1975.