VONG, SOPHA. Effect of nitrogent fertilization on growth and yield of tomato, ឥទ្ធិពលនៃកំរិតជីអ៊ុយរ៉េលើការលូតលាស់ និងទិន្នផលដំណាំប៉េងប៉ោះ - Phnom Penh RUA 2011 - xii, 32p. ill. 29cm. Dewey Class. No.: AGR VON 2011 B049 Or.1