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- Alces [elektronický zdroj] . . [Thunder Bay, Ont. : North American Moose Conference and Workshop, 1981]- . v.
- Ecological studies of wolves on Isle Royale [elektronický zdroj] : annual report, covering the ... year in the Isle Royale studies / by Rolf O. Peterson and Joseph M. Scheidler, [Philip W. Stephens]. . [S.l. : s.n., 1977]- . v.