IM SOKNIN; អ៊ីម សុខនីន creator text Phnom Penh RUA 2015 monographic ix;40p. ill. 29cm. AGR IM 2015 B474 Or.1 STUDY ON DRY SEASON RICE CULTIVATING BY FARMERS AT CHOLKIRY DISTRICT KOMPONG CHHNANG PROVINCE STUDY ON DRY SEASON RICE CULTIVATING BY FARMERS AT CHOLKIRY DISTRICT KOMPONG CHHNANG PROVINCE