growth comparison of rubber clones irca 111,pb 217, pr 300 at krek company (cambodia) co., ltd.,ប្រៀបធៀបការលូតលាស់ក្លូនកៅស៊ូ​ ​irca 111, pb 217, pr 300 នៅក្រុមហ៊ុនក្រែក(ខេមបូឌា)​ខូ.,អិលធីឌី LAY SEANGLEN,ឡៃ ស៊ាងឡែង RUB LAY 2016 B614 Or.1 phnom penh RUA 2016 2016 Text x;40p; https://drive.google.com/file/d/1k9McBFaJGfVkQ-J2CalJK-Erv6axX1vt/view?usp=sharing