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Sinopsis

McCormick (1809-1884) demonstrated a workable reaper in 1831 and spent the rest of his life improving the reaper, and expanding the McCormick Harvesting Machine Company with sales across the United States and around the world. McCormick's reapers had profound effects on the alleviation of U.S. and world hunger. 
aspenleafmedia.com

Duración: 34 minutos (00:34:05)
Fecha de publicación: 26/04/2011; Unabridged; Copyright Year: — Copyright Statment: —

• Biografía y memorias
• Ciencia y tecnología
• Empresa y economía
• Ensayo