Gastal, Edmundo Webster, B. Valverde, C. Fletcher, A.
Cooperative activity and efficency in agricultural research Report; the impact of research on national agricultural development - The Hague (Países Bajos) 1986 - p. 135-143
Cooperative activity and efficency in agricultural research Report; the impact of research on national agricultural development - The Hague (Países Bajos) 1986 - p. 135-143

