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）];
学科分类号：
0901 ;
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页码：183 / 189
页数：7
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