perspectives of farmers on orange disease problem in bavel distirict, battambang province (ទស្សនៈដសិករលើបញ្ហាជម្ងឺក្រូចពោធិសាត់នៅស្រុកបរវេល ខេត្តបាត់ដំបង) PORN, TOUCH. GRS POR 2009 B356 Or.1 Phnom Penh RUA 2009 2009 Text vi, 23p. https://drive.google.com/file/d/14QPQ_kCFSVdoHZIIfzj_t_xBHFWOF5v_/view?usp=sharing