@misc{Härkönen_T._Seasonal_1987,
 author={Härkönen, T.},
 volume={213},
 copyright={Prawa zastrzeżone - dostęp ograniczony},
 journal={Journal of Zoology, Lond.},
 address={London},
 howpublished={online},
 year={1987},
 publisher={Wiley-Blackwell},
 language={eng},
 type={Tekst},
 title={Seasonal and regional variations in the feeding habits of the harbour seal, Phoca vitulina, in the Skagerrak and the Kattegat},
 keywords={Feeding, Feeding habits, Habits, Harbour seal, Kattegat, Phoca vitulina, Seal, Skagerrak, Variation},
}