Erupcja Mount St. Helens (1980) (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Erupcja Mount St. Helens (1980)" in Polish language version.

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archive.org

18 mai 1980, éruption du Mont St. Helens. USDA Forest Service. [dostęp 2007-09-13]. (ang.)..

Mount St. Helens Precursory Activity: March 22–28, 1980. United States Geological Survey, 2001. [dostęp 2007-05-26].
Cascades Volcano Observatory USGS Mount St. Helens Precursory Activity.
Mount St. Helens Precursory Activity: March 29–April 4, 1980. United States Geological Survey, 2001. [dostęp 2007-05-26].
Mount St. Helens Precursory Activity: April 5–11, 1980. United States Geological Survey, 2001. [dostęp 2007-05-26].
Mount St. Helens Precursory Activity: May 3–9, 1980. United States Geological Survey, 2001. [dostęp 2007-05-26].
Mount St. Helens Precursory Activity: May 10–17, 1980. United States Geological Survey, 2001. [dostęp 2007-05-26]..
Tilling, Robert I., Topinka, Lyn and Swanson, Donald A.: Eruptions of Mount St. Helens: Past, Present, and Future. U.S. Geological Survey (Special Interest Publication), 1990. [dostęp 2007-06-03].

Reawakening and Initial Activity. United States Geological Survey, 1997. [dostęp 2007-05-31].

Bernard Henry et Christian Heeb: USA : les États de l’Ouest, Bruxelles. Artis-Historia, 1996, s. 109. OCLC 1009445063.
Garnier Emmanuel. Laki : une catastrophe européenne. „L’Histoire”, s. 76, czerwiec 2009. ISSN 0182-2411. .