Islam, M.A., M.A. Samad, and M.B. Rahman. 2004. “Evaluation of Alum Precipitated Formalin Killed Fowl Cholera Vaccines With Their Immunologic Responses in Ducks”. International Journal of Poultry Science 3 (2): 140–143. https://doi.org/10.3923/ijps.2004.140.143.