TY  - BOOK
AU  - De Vries, C. A.
TI  - Agricultural extension in the developing countries; a bibliography
T2  - International Institute for Land reclamation and Improvement . Bibliography
U1  - 630.717 
PY  - 1968///
CY  - Wageningen
PB  - International Institute for Land Reclamation and Improvement
KW  - Extensión agrícola
KW  - Países subdesarrollados
KW  - Bibliografía
ER  -