Photoperiod and testicular function in Phodopus sungorus.

@article{Bergmann1987PhotoperiodAT,
  title={Photoperiod and testicular function in Phodopus sungorus.},
  author={Martin W Bergmann},
  journal={Advances in anatomy, embryology, and cell biology},
  year={1987},
  volume={105},
  pages={1-76}
}
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