Nathiang, P. (2020) “ [Retracted Article] : Development of rice seed dropping machine for paddy field with local farmer participation in Uttaradit province [Area Based Development Research Journal, (2019), 11(3), 218-233] (in Thai)”, Area Based Development Research Journal, 12(2), p. 158. Available at: https://so01.tci-thaijo.org/index.php/abcjournal/article/view/241200 (Accessed: 27 April 2024).