RELATIVE ECONOMIC IMPORTANCE OF MILK AND MILK FAT PERCENTAGE IN SELECTING ARTIFICIALLY INSEMINATED PROVEN DIARY SIRES

被引:6
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SPAHR, SL
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10.3168/jds.S0022-0302(67)87534-9
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S8 [畜牧、 动物医学、狩猎、蚕、蜂];
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0905 ;
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