Sulaiman , M.; Saidu, L.; Abdu, P. Atresia of the Left Oviduct and Abnormality of the Caecum of a 12-Month-Old Layer:A Case Report. Int. J. Poult. Sci. 2010, 9 (9), 920–922. https://doi.org/10.3923/ijps.2010.920.922.