The concentration of the labile factor of prothrombin in the blood of various species.

@article{Stefanini1948TheCO,
  title={The concentration of the labile factor of prothrombin in the blood of various species.},
  author={Mario Stefanini and Armand J. Quick},
  journal={Federation proceedings},
  year={1948},
  volume={7 1 Pt 1},
  pages={191}
}