搜索结果: 1-1 共查到“食品加工技术 national”相关记录1条 . 查询时间(0.201 秒)
The National Dairy Heifer Evaluation Project: A Profile of Heifer Management Practices in the United States
calf management heifer managemen health national survey
2008/7/8
The National Dairy Heifer Evaluation Project was a cooperative, USDA-sponsored project involving state agricultural departments, the Cooperative Extension Service, the National Agricultural Statistics...