EFFECT OF TECHNICAL PROGRESS ON HERD SIZES IN ANIMAL PRODUCTION

被引：0
|
作者：
ARTMANN, R
ROSEGGER, S
机构：
来源：
LANDBAUFORSCHUNG VOLKENRODE | 1972年 / 22卷 / 01期
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暂无
中图分类号：
S [农业科学];
学科分类号：
09 ;
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页码：69 / &
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