Bereskin, B., Gerrits, R., Davey, R. Central swine-testing and purebred - improvement programs in the United States. Washington: 1973 18 p. : tab.
Bereskin, B., Gerrits, R., Davey, R. Central swine-testing and purebred - improvement programs in the United States. Washington: 1973 18 p. : tab.
Bereskin, B., Gerrits, R., Davey, R. (1973) Central swine-testing and purebred - improvement programs in the United States, Washington: 18 p. : tab.
Bereskin, B., Gerrits, R., & Davey, R. (1973). Central swine-testing and purebred - improvement programs in the United States. Washington: 18 p. : tab.
Bereskin B, Gerrits R, Davey R. Central swine-testing and purebred - improvement programs in the United States. Washington: 1973. p. 18 p. : tab.
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