P A Peethambaran & S Ravi. (2002). Calcium and phosphorus requirements of indigenous layer ducks (Anas platyrhynchos ) (MVSC.). College of veterinary and animal science.
Chicago Edition CitationP A Peethambaran and S Ravi. Calcium and Phosphorus Requirements of Indigenous Layer Ducks (Anas Platyrhynchos ). MVSC. College of veterinary and animal science, 2002.
Deismireacht MLAP A Peethambaran and S Ravi. Calcium and Phosphorus Requirements of Indigenous Layer Ducks (Anas Platyrhynchos ). MVSC. College of veterinary and animal science, 2002.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.