Debating Farm Power: Draft Animals, Tractors, and the United States Department of Agriculture

Autor:	Ellenberg, George B.
Zdroj:	Agricultural History, 2000 Apr 01. 74(2), 545-568.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3744871 Zobrazit plný text záznamu