comp arison of bok choy (brassica rapa ) cultivars on growth and yield ,ការប្រៀបធៀបពូជស្ពៃតឿលើការលូតលាស់និងទិន្នផល RATH SREYMOM, រ័ត្ន ស្រីមុំ AGR RAT 2017 B655 Or.1 phnom penh RUA 2017 2017 Text ix; 38p; https://drive.google.com/file/d/1gf8uB57PtgmiQ7hZiJPynU6WIoUPOjf9/view?usp=sharing