Social science research for agricultural technology development : spatial and temporal dimensions; proceeding of
/ An internaional institute of tropial agriculture (IITA); Rochefeller foundation workshop,2-5 octobre 1990, Ibadan, Nigeria; ed by Karen Ann Dvorak
. - Wallingford : CAB international, cop. 1993
. - XVI-223 p. ; 25 cm.
- Spatial and temporal dimensions .
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0851988067
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