@misc{Hewer_H._R._The_1964,
 author={Hewer, H. R.},
 volume={142},
 number={4},
 copyright={Rights Reserved - Restricted Access},
 address={London},
 journal={Proceedings of the Zoological Society of London},
 howpublished={online},
 year={1964},
 publisher={Wiley-Blackwell},
 language={eng},
 title={The determination of age, sexual maturity, longevity and a life-table in the grey seal (Halichoerus grypus)},
 type={Text},
 keywords={Halichoerus grypus, Life-table, Sexual maturity},
}