Kashem M, Parvej M, Hashem M, Moula M, Kibria A. Determination of serum antibody titres and immune status of layer flocks against Newcastle Disease virus at Chittagong district of Bangladesh. Int J Nat Sci [Internet]. 2011 Nov. 3 [cited 2024 Dec. 22];1(2):35-8. Available from: https://banglajol.info/index.php/iJNS/article/view/8818