study on newcastle disease of hybrid chicken meat and theirs antibodies by using haemagglutination and haemagglutination inhibitor-test at royal universty of agriculture (សិក្សាលើជំងឺញ៉ូវកាសរបស់មាន់សាច់កូនកាត់ និង អង់ទីគ័រ របស់វាតាមរយៈ ​haemagglutination and haemagglutination inhibitor- test នៅសាកលវិទ្យល័យភូមិន្ទកសិកម្ម) PHANN, CHANDARA. AVM PHA 2013 B106 Or.1 Phnom Penh RUA 2013 2013 Text viii, 38p. https://drive.google.com/file/d/1avCEa4t47jS-o4P05ofce-mXerBYbPTr/view?usp=sharing