Choice and productivity effects of animal traction technology in the semi-arid zone of Northern Nigeria
著者
書誌事項
Choice and productivity effects of animal traction technology in the semi-arid zone of Northern Nigeria
（African rural social sciences research networks series）（Issues in African rural development monograph series, 12）
African Rural Social Sciences Research Networks, Winrock International, 1998
- : pbk
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注記
"October 1998."
Includes bibliographical references (p. 31-32)