Diane E Boyer

Identifiers

• Open LibraryOL2948997A

Top Subjects

• Grand Canyon (Ariz.) -- Description and travel (1)
• Colorado River (Colo.-Mexico) -- Description and travel (1)
• River surveys -- Colorado River (Colo.-Mexico) -- History -- 20th century (1)
• Water resources development -- Arizona -- Grand Canyon -- History -- 20th century (1)
• Grand Canyon (Ariz.) -- Environmental conditions (1)
• Geological Survey (U.S.) -- History -- 20th century (1)
• Dams -- Colorado River (Colo.-Mexico) -- History -- 20th century (1)