Srinivasan , P., Balasubramaniam, G., Gopalakrishnamurthy, T., & Balachandran, P. (2012). Pathology of Oviduct in Sub Optimally Producing Commercial Layer Chicken. International Journal of Poultry Science, 11(9), 577–581. https://doi.org/10.3923/ijps.2012.577.581