1- Hahn, D.C., JS Hatfield, M. Abdelnabi, J. Wu, L.D. Igl, M. A. Ottinger, (2005). Inter-species variation in yolk steroid levels and a cowbird-host comparison . J. Avian Biology 36: 1: 40-46
كلية الزراعة
جامعة أسيوط
1- Hahn, D.C., JS Hatfield, M. Abdelnabi, J. Wu, L.D. Igl, M. A. Ottinger, (2005). Inter-species variation in yolk steroid levels and a cowbird-host comparison . J. Avian Biology 36: 1: 40-46
جامعة أسيوط