机译:综合作物畜牧系统:纽约,不列颠哥伦比亚省和美国东南部的课程
USDA-Agricultural Research Service Raleigh NC 27695 USA;
Agriculture and Agri-Food Canada Agassiz BC VOM 1A0 Canada;
Agriculture and Agri-Food Canada Agassiz BC VOM 1A0 Canada;
Agriculture and Agri-Food Canada Agassiz BC VOM 1A0 Canada;
Cornell University Department of Animal Science Ithaca NY 14853 USA;