Village extension worker services on cattle treatmen in rolea phear district, kompong chhnang province, (សេវាកម្មភ្នាក់ងារផ្សេព្វផ្សាយភូមិទៅលើការព្យាបាលគោ នៅស្រុករលាប្អៀរ ខេត្តកំពង់ឆ្នំាង) CHHEM SOPHEA AVM CHH 2013 B107 Or.1 Phnom Penh Rua 2013 2013 Text x; 55p. https://drive.google.com/file/d/1EL2-Ca3e6D_rnQYxThAkRby6FmIiTmiM/view?usp=sharing