Fulbert, Akouango, Ngokaka Christophe, and Mompoundza Paul. 2009. “Productivity of Khaki Campbell Ducks (Cairina Moschata) under the Local Agricultural Produce and by Products in the Breeding Conditions of Brazzaville-Congo”. Pakistan Journal of Nutrition 8 (12): 1910–1914. https://doi.org/10.3923/pjn.2009.1910.1914.