TY  - BOOK
AU  - Walter de Boef
AU  - Kojo Amanor
AU  - Kate Wellard
AU  - Anthony Bebbington
TI  - Cultivating knowledge: Genetic diversity, farmer experimentation and crop research 
SN  - 1853392049(Pbk)
AV  - SB185.C8 1993 
PY  - 1993///
CY  - UK
PB  - Intermediate technology Publications
ER  -