@misc{Perry_E._A._Variation_1999,
 author={Perry, E. A. and Terhune, J. M.},
 volume={249},
 copyright={Rights Reserved - Restricted Access},
 address={London},
 journal={Journal of Zoology, Lond.},
 howpublished={online},
 year={1999},
 publisher={Wiley-Blackwell},
 language={eng},
 title={Variation of harp seal ( Pagophilus groenlandicus ) underwater vocalizations among three breeding locations},
 type={Text},
 keywords={Harp seal, Pagophilus groenlandicus},
}