Okcidenta cugo (Esperanto Wikipedia)

Analysis of information sources in references of the Wikipedia article "Okcidenta cugo" in Esperanto language version.

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2,121^st place

2,555^th place

conifers.org

angle Packee, E.C. Tsuga heterophylla. Silvics of North America, Volume 1. U.S. Department of Agriculture, Forest Service, Washington, DC. 1990. Tsuga heterophylla Arkivigite je 2011-06-08 per la retarkivo Wayback Machine angle

angle Conifer Specialist Group (1998). Tsuga heterophylla. Internacia Ruĝa Listo de Endanĝeritaj Specioj, eldono de 2006. IUCN 2006. Elŝutita 12 May 2006.

angle Washington State Government: State Symbols Arkivigite je 2007-11-15 per la retarkivo Wayback Machine

angle Gymnosperm Database: Tsuga heterophylla Arkivigite je 2005-09-24 per la retarkivo Wayback Machine
angle Packee, E.C. Tsuga heterophylla. Silvics of North America, Volume 1. U.S. Department of Agriculture, Forest Service, Washington, DC. 1990. Tsuga heterophylla Arkivigite je 2011-06-08 per la retarkivo Wayback Machine angle
angle Washington State Government: State Symbols Arkivigite je 2007-11-15 per la retarkivo Wayback Machine