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Relation of the character of the endosperm to the susceptibility of dent corn to root rotting - Trost, John Francis, 1897 -1972 (U.S. Dept. of Agriculture, 1922)

Relative efficiency of different rations for fleshing horses for market - Obrecht, Rufus C. (Rufus Chancey), 1875 - (University of Illinois Agricultural Experiment Station, 1909)

ren yu sheng wu quan lun wen ji - Zhongguo ren yu sheng wu quan guo jia wei yuan hui (zhong guo ren yu sheng wu quan guo jia wei yuan hui, 1987)

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