Harlan, J. R. (1956). Theory and dynamics of grassland agriculture. D Van nostrand Company Inc.
Chicago Style aipamenaHarlan, Jack R. Theory and Dynamics of Grassland Agriculture. Newjerssey: D Van nostrand Company Inc, 1956.
MLA aipamenaHarlan, Jack R. Theory and Dynamics of Grassland Agriculture. D Van nostrand Company Inc, 1956.
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