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Influence of Agricultural Extension Contact on Control of Farmland Degradation among Yam Farmers in Delta North Agricultural Zone of Delta State, Nigeria. Mediterr. J. Soc. Sci. [Internet]. 2014 Jan. 6 [cited 2024 Nov. 25];5(2):33. Available from: https://www.richtmann.org/journal/index.php/mjss/article/view/1956