Introduction of animal-powered cereal mills /
Boie, Wulf,1957-
German Appropriate Technology Exchange.
Braunschweig : Friedr. Vieweg & Sohn,
c1989.
"A publication of Deutsches Zentrum für Entwicklungstechnologien - GATE in: Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH."
Animal-powered engines
Animal traction
Flour mills