登入選單

返回Google圖書搜尋

The Effect of Level and Form of Roughage in the Diets of Finishing Cattle

William Wayne Schneider

出版	University of Nebraska--Lincoln, 1976
URL	http://books.google.com.hk/books?id=tA8vOAAACAAJ&hl=&source=gbs_api

註釋

An examination of the origins of the modern world looks to a world-wide climatic event that blocked out much of the sunlight for eighteen months, wreaking havoc on civilization.