登入選單

返回Google圖書搜尋

Results of the Douglas County Cow Testing Association

A. L. HaeckerJulius Herman Frandsen

出版	University of Nebraska, Agricultural Experiment Station of Nebraska, 1912
URL	http://books.google.com.hk/books?id=2RMnAQAAMAAJ&hl=&source=gbs_api