Nathiang P. [Retracted Article] Development of Rice Seed Dropping Machine for Paddy Field with Local Farmer Participation in Uttaradit Province. Area Based Dev. Res. J. [Internet]. 2019 Jun. 24 [cited 2024 Apr. 27];11(3):218-33. Available from: https://so01.tci-thaijo.org/index.php/abcjournal/article/view/192563