A SYSTEMS STUDY OF HIGH AND LOW CONCENTRATE INPUTS FOR DAIRY-COWS - GRASSLAND PRODUCTION AND UTILIZATION OVER 4 YEARS

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作者：

LEAVER, JD

FRASER, D

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RESEARCH AND DEVELOPMENT IN AGRICULTURE | 1989年 / 6卷 / 03期

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S3 [农学（农艺学）];

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0901 ;

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页码：183 / 189

页数：7

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