comparison of different rates of 15-15-15 fertilizer on tomato (lycopersicom esculentuum),ប្រៀបធៀបកម្រិតជី១៥-១៥-១៥​ ខុសៗគ្នាទៅលើដំណាំប៉េងប៉ោះ KOEM SOKUN,កឹម សុគុន្ធ AGR KOE 2016 B568 Or.1 phnom penh RUA 2016 2016 Text xi;38p; https://drive.google.com/file/d/1mn5dNkNosCDVT7ONJyYU48B_2Rvgc0um/view?usp=sharing