Butterflies (Lepidoptera:Papilionoidea and Hesperioidea) of Roxborough State Park, Colorado, USA: Baseline inventory, community attributes, and monitoring plan
Nelson S.M.
Epstein M.E.
Environmental Management : international journal for decision makers, scientists and environmental auditors. Roč. 22, č. 2 (1998), s. 287-295. - New York : Springer - Verlag
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