Thom, T. J. (1997). The relationship between the distribution of otter (Lutra lutra, L.) signs and habitat in the upper Tyne river catchment, NE England.
Lua i Stíl Chicago (17ú heag.)Thom, Timothy James. The Relationship Between the Distribution of Otter (Lutra Lutra, L.) Signs and Habitat in the Upper Tyne River Catchment, NE England. 1997.
Lua MLA (8ú heag.)Thom, Timothy James. The Relationship Between the Distribution of Otter (Lutra Lutra, L.) Signs and Habitat in the Upper Tyne River Catchment, NE England. 1997.
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