Blue Mountains (ecoregion) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Blue Mountains (ecoregion)" in English language version.

refsWebsite

Global rank English rank

167^th place

198^th place

1,982^nd place

1,603^rd place

1^st place

usgs.gov

This article incorporates public domain material from Thorson, TD; Bryce, SA; Lammers, DA; et al. Ecoregions of Oregon (PDF). United States Geological Survey. (color poster with map, descriptive text, summary tables, and photographs; with a Reverse side).
This article incorporates public domain material from McGrath, CL; Woods, AJ; Omernik, JM; et al. Ecoregions of Idaho (PDF). United States Geological Survey. (color poster with map, descriptive text, summary tables, and photographs; with a Reverse side).

U.S. Environmental Protection Agency, Draft: Level III and IV Ecoregions of the Northwestern United States (PDF), archived from the original (PDF) on 2019-04-12, retrieved 2010-09-27 Cited for Washington information instead of an Ecoregions of Washington poster, which has not yet been located.