http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
World oil's 1958 oil map of Venezuela, Colombia and Trinidad
World oil's 1958 oil map of Peru, Ecuador, Bolivia
"Published as a supplement to the International outlook issue of World oil, August 15, 1958."
Map in margin: World oil's 1958 oil map of Peru, Ecuador, Bolivia. Insets: Santa Elena fields - Peru coastal fields - Bolivian fields.