Physiographic regions of the United States (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Physiographic regions of the United States" in English language version.

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Fenneman, Nevin M. (1916). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 6 (1): 19–98. doi:10.1080/00045601609357047. hdl:2027/njp.32101059544153. ISSN 0004-5608.
Fenneman, Nevin M. (1917). "Physiographic Subdivision of the United States". Proceedings of the National Academy of Sciences of the United States of America. 3 (1): 17–22. doi:10.1073/pnas.3.1.17. OCLC 43473694. PMC 1091163. PMID 16586678.
Fenneman, Nevin M. (1928). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 18 (4): 261–353. doi:10.2307/2560726. hdl:2027/njp.32101059544153. JSTOR 2560726.
Fenneman, Nevin M. (1946). Physical divisions of the United States (Report). U.S. Geological Survey. doi:10.3133/70207506.
Joerg, Wolfgang L. G. (1914). "The Subdivision of North America into Natural Regions: A Preliminary Inquiry". Annals of the Association of American Geographers. 4: 55–83. doi:10.2307/2560741. JSTOR 2560741.

Fenneman, Nevin M. (1916). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 6 (1): 19–98. doi:10.1080/00045601609357047. hdl:2027/njp.32101059544153. ISSN 0004-5608.
Fenneman, Nevin M. (1928). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 18 (4): 261–353. doi:10.2307/2560726. hdl:2027/njp.32101059544153. JSTOR 2560726.

Fenneman, Nevin M. (1928). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 18 (4): 261–353. doi:10.2307/2560726. hdl:2027/njp.32101059544153. JSTOR 2560726.
Joerg, Wolfgang L. G. (1914). "The Subdivision of North America into Natural Regions: A Preliminary Inquiry". Annals of the Association of American Geographers. 4: 55–83. doi:10.2307/2560741. JSTOR 2560741.

"Physiographic Regions". United States Geological Survey. 2003-04-17. Archived from the original on 2006-05-15. Retrieved 2008-01-30.

Fenneman, Nevin M. (1946). Physical divisions of the United States (Report). U.S. Geological Survey. doi:10.3133/70207506.

"Physiographic Regions". United States Geological Survey. 2003-04-17. Archived from the original on 2006-05-15. Retrieved 2008-01-30.

Fenneman, Nevin M. (1916). "Physiographic Divisions of the United States". Annals of the Association of American Geographers. 6 (1): 19–98. doi:10.1080/00045601609357047. hdl:2027/njp.32101059544153. ISSN 0004-5608.
Fenneman, Nevin M. (1917). "Physiographic Subdivision of the United States". Proceedings of the National Academy of Sciences of the United States of America. 3 (1): 17–22. doi:10.1073/pnas.3.1.17. OCLC 43473694. PMC 1091163. PMID 16586678.
Fenneman, Nevin Melancthon (1931). Physiography of western United States. McGraw-Hill. OCLC 487636.
Fenneman, Nevin Melancthon (1938). Physiography of eastern United States. McGraw-Hill. OCLC 487628.