Roonapai R, Aungsuratana A- on. Some Factors Effecting the Promotion of Rubber Cropping Program in the Rayong Province. kasetsart J. Soc. Sci. [internet]. 1988 Jan. 1 [cited 2026 Sep. 11];9(1):25-32. available from: https://so04.tci-thaijo.org/index.php/kjss/article/view/243849