Progesterone in defatted milk: its relation to insemination and pregnancy in normal cows as compared with cows on problem farms and individual problem animals.

@article{Oltner1981ProgesteroneID,
  title={Progesterone in defatted milk: its relation to insemination and pregnancy in normal cows as compared with cows on problem farms and individual problem animals.},
  author={R Oltner and L E Edqvist},
  journal={The British veterinary journal},
  year={1981},
  volume={137 1},
  pages={78-87}
}