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Incubation of Hens' Eggs

Harry M. Lamon

出版	U.S. Department of Agriculture, 1920
URL	http://books.google.com.hk/books?id=fHEaAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

"Most boys and girls when joining a poultry club begin their work on a small scale by carrying on their hatching operations with sitting hens. Accordingly, the directions in this bulletin are given for the use of beginners or those wishing to hatch eggs by the natural method."--Page [2].