[prepared by] the University of Oxford, Institute for Research in Agricultural Economics, Oxford, England in cooperation with Economic Research Service, U.S. Dept. of agriculture

Publication Services Division of the Israel for Scientific Translations 1969

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by K.E. Hunt

[University of Oxford, Institute for Research in Agricultural Economics] 1954

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by R.N. Dixey

Agricultural Economics Research Institute 1937

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by J. Pryse Howell

Oxford University Press 1923

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