Supitchaya Thongdee. 2009. Phosphorus control of the pre-germinated direct seeds rice process. Faculty of Environment and Resource Studies, Mahidol University;

Supitchaya Thongdee. Phosphorus control of the pre-germinated direct seeds rice process. . Bangkok:Mahidol University, 2009.

Supitchaya Thongdee. (2009) Phosphorus control of the pre-germinated direct seeds rice process . Mahidol University/Bangkok.