[68544]   
STEINER, Kurt G.
On-farm experimentation handbook for rural development projects : guidelines for the development of ecological and socio-economic sound extension messages for small farmers / Kurt G, Steiner. - Alemanha : Eschborn, 1987. - 307 p. : il. ; 21 cm
Descritores: Sector agrícola | Cooperação agrícola | Cooperação técnica
Cota: 63|IPAD