ANIMAL TRACTION IN EASTERN UPPER VOLTA:
BARRETT VINCENT VINCENT BARRETT, GREGORY LASSITER , DAVID WILCOCK, DOYLE BAKER , AND CRAWFORD.
ANIMAL TRACTION IN EASTERN UPPER VOLTA: A TECHNICAL ,ECONOMIC AND INSTITUTIONAL ANALYSIS: - MICHGAN, MICHGAN STATE UNIVERSITY: 1982.
636 BAR
ANIMAL TRACTION IN EASTERN UPPER VOLTA: A TECHNICAL ,ECONOMIC AND INSTITUTIONAL ANALYSIS: - MICHGAN, MICHGAN STATE UNIVERSITY: 1982.
636 BAR