@misc{Petty_S._J._Diet_1999,
 author={Petty, S. J.},
 volume={248},
 copyright={Rights Reserved - Restricted Access},
 address={London},
 journal={Journal of Zoology, Lond.},
 howpublished={online},
 year={1999},
 publisher={Wiley-Blackwell},
 language={eng},
 title={Diet of tawny owls ( Strix aluco ) in relation to field vole ( Microtus agrestis ) abundance in a conifer forest in northern England},
 type={Text},
 keywords={England, Field vole, Microtus agrestis, Strix aluco, Tawny owls},
}