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1. Basic elements of the farming systems approach to research and extension

by Department of Agriculture.

Publisher: Quezon City : Bureau of Agricultural Research, 1990Availability: Items available for loan: [Call number: 07.03.02 DA DBA 1990] (1).

2. An introduction to agriculutural extension

by Mosher, Arthur Theodore.

Publisher: New York: Agricultural Development Council, 1978Availability: Items available for loan: [Call number: 07.01.02 A/D/C AIN 1979] (1).

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