@misc{Ashton_E._H._The_1959,
 author={Ashton, E. H. and Vevers, H. G.},
 volume={132},
 number={3},
 copyright={Rights Reserved - Restricted Access},
 address={Londyn},
 journal={Proceedings of the Zoological Society of London},
 howpublished={online},
 year={1959},
 publisher={Wiley-Blackwell},
 language={eng},
 title={The numbers of exhibits, births and deaths in the menagerie at Regent's Park: 1835-1957, and in Whipsnade Park: 1931-1957},
 type={Text},
 keywords={Whipsnade park, Regent's park, Amphibians, Birds},
}