TY  - ADVS
ED  - British Broadcasting Corporation.
TI  - Spatial diffusion: theory and practice 
PY  - 1972///
CY  - Milton Keynes
PB  - Open University
KW  - Diffusion of innovations
KW  - Communication of technical information
KW  - Agricultural
KW  - Morocco
N1  - An area in the vicinity of the irrigation dam in Zig valley ( Southern Morroco ) has been used for the diffusion of innovations and agriculture innovations and its acceptance by local farmers; note: 4p; Converted into VHS 1/2 in. and U-matic 3/4 in
ER  -