Geology of Colombia (English Wikipedia)
Analysis of information sources in references of the Wikipedia article "Geology of Colombia" in English language version.
loc.gov
lcweb2.loc.gov
- Bushnell, David and Rex A. Hudson. "Geology". In Colombia: A Country Study (Rex A. Hudson, ed.), pp. 70-71. Library of Congress Federal Research Division (2010).
This article incorporates text from this source, which is in the public domain.
