@misc{Krohn_P._L._The_1960,
 author={Krohn, P. L.},
 volume={134},
 number={4},
 copyright={Rights Reserved - Restricted Access},
 address={Londyn},
 journal={Proceedings of the Zoological Society of London},
 howpublished={online},
 year={1960},
 publisher={Wiley-Blackwell},
 language={eng},
 title={The duration of pregnancy in rhesus monkeys Macaca mulatta},
 type={Text},
 keywords={Macaca mulatta, Rhesus monkeys, Pregnancy},
}