Popy, N., Asaduzzaman, M., Miah, M. S., Siddika, A., Sufian, M. A., & Hossain, M. M. (2012). Pathological study on the upper respiratory tract infection of chickens and isolation, identification of causal bacteria. Bangladesh Veterinarian, 28(2), 60–69. https://doi.org/10.3329/bvet.v28i2.10677