TY  - BOOK
AU  - Purcell,Dennis
AU  - Anderson,Jock R.
TI  - Agricultural extension and research: achievements and problems in national systems 
SN  - 0821338781
AV  - S544.6 .P86 1997
U1  - 630.71 14
PY  - 1997///
CY  - Washington, D.C.
PB  - World Bank
KW  - World Bank
KW  - Developing countries
KW  - Evaluation
KW  - Agricultural development projects
KW  - Agricultural extension work
KW  - National agricultural research systems
KW  - Dự án phát triển nông nghiệp
KW  - Nông nghiệp
KW  - Sản xuất nông nghiệp
N1  - Includes bibliographical references (p. 257-264)
ER  -