characteristics of forest stands within home ranges of Mexican spotted owls in Arizona and New Mexico (PDF). Western Journal of Applied Forestry. 2003, 18 (3): 189–98

美国国家森林列表

[2012-10-20]. （原始内容存档于2012-10-18）. Fattig, Paul. Tallest of the tall. Mail Tribune (Medford, Oregon). 2011-01-23 [2012-10-20]. （原始内容存档于2013-02-21）. Salmon-Challis

List of mountain ranges of Oregon

来自维基百科，自由的百科全书

Found in articles

喀斯喀特山脉

西點林鴞

characteristics of forest stands within home ranges of Mexican spotted owls in Arizona and New Mexico (PDF). Western Journal of Applied Forestry. 2003, 18 (3): 189–98

美国国家森林列表

[2012-10-20]. （原始内容存档于2012-10-18）. Fattig, Paul. Tallest of the tall. Mail Tribune (Medford, Oregon). 2011-01-23 [2012-10-20]. （原始内容存档于2013-02-21）. Salmon-Challis