Prammanee, S., Aungsuratana, A.- on, & Keosonthi, C. (1993). Relationship Between Personal/Mass Media and Practical Control of Smut Disease of Cane Farmer in Agro-economic Zone 7 for Yield Improvement. Kasetsart Journal of Social Sciences, 14(2), 135–143. retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/243780