Weed management on phka romdeng rice variety plant by drumseeder in sandyloam condition,(វិធានការគ្រប់គ្រងស្មៅចង្រៃលើពូជស្រូវរំដេងដែលដំាដោយឧបករណ៍អូសគ្រាប់) SEA SREYNEANG AGR SEA 2013 B056 Or.1 phnom penh RUA 2013 2013 Text x, 61p. https://drive.google.com/file/d/1L_XvQz7aGhLdC4PcI2M2i2mmfk9muFrk/view?usp=sharing