United Nations. Special Sahelian Office. (1973). Agriculture: Outline analysis of agriculture problem area : Sudano-Sahelian zone. The Office.
Chicago-viite (17. p.)United Nations. Special Sahelian Office. Agriculture: Outline Analysis of Agriculture Problem Area : Sudano-Sahelian Zone. [New York]: The Office, 1973.
MLA-viite (8. p.)United Nations. Special Sahelian Office. Agriculture: Outline Analysis of Agriculture Problem Area : Sudano-Sahelian Zone. The Office, 1973.
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