Benor, D., & Harrison, J. Q. (1977). Agricultural extension: The training and visit system. Washington, D.C.: World Bank.
Παραπομπή Chicago StyleBenor, Daniel, and James Q. Harrison. Agricultural Extension: The Training and Visit System. Washington, D.C.: World Bank, 1977.
Παραπομπή MLABenor, Daniel, and James Q. Harrison. Agricultural Extension: The Training and Visit System. Washington, D.C.: World Bank, 1977.
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