A Comparison of Natural Service and Artificial Insemination in Seasonally Calving Dairy Herds

Autor:	O'Farrell, K. J.
Zdroj:	Irish Journal of Agricultural Research, 1977 Dec 01. 16(3), 251-257.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/25555875 Zobrazit plný text záznamu