Crow, J. E. (1977). Planning for agricultural development: A case study of Zinder, Niger. s.n..
Chicago-viite (17. p.)Crow, John E. Planning for Agricultural Development: A Case Study of Zinder, Niger. [s.l.: s.n., 1977.
MLA-viite (8. p.)Crow, John E. Planning for Agricultural Development: A Case Study of Zinder, Niger. s.n., 1977.
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