effect of seeding rates on growth and yield of ir66 rice (ឥទ្ធិពលនៃបរិមាណគ្រាប់លើការលូតលាស់ និង ទិន្នផលស្រូវអ៊ីអ៊ែរ ៦៦) 1158 LEM, VINH. AGR LEM 2010 B045 Or.1 https://drive.google.com/file/d/1wDhqtZrzfIi2XIpFZb2-aRVoHotrS9n_/view?usp=sharing Phnom Penh RUA 2010 2010 Text xi, 54p. eng