Annual variation in reproductive behavior, testosterone, and plasma FSH levels in the Rouen duck, Anas platyrhynchos.

@article{Balthazart1976AnnualVI,
  title={Annual variation in reproductive behavior, testosterone, and plasma FSH levels in the Rouen duck, Anas platyrhynchos.},
  author={Jacques Balthazart and Jean Claude Hendrick},
  journal={General and comparative endocrinology},
  year={1976},
  volume={28 2},
  pages={171-83}
}