Bakhshi Jahromi, A. , and Zamani, G. H. . "A Study of the Extension competencies of the Consulting Companies' Agricultural Experts (as Private Agricultural Extension Agents) (A Case of Study: Marvdasht, Iran)", Iranian Journal of Agricultural Economics and Development Research, 43, 3, 2012, 329-340. doi: 10.22059/ijaedr.2012.30495