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Aggregates (Building materials) -- Colorado -- Douglas County -- Maps. : Maps  1973 1
Camp sites, facilities, etc. -- Law and legislation -- Oregon -- Douglas County. : Government Documents  1999 1
Camp sites, facilities, etc. -- Oregon -- Douglas County. : Government Documents  1999 1
Coaching (Transportation) -- Colorado -- Douglas County -- Maps. : Maps  1973 1
Douglas County (Colo.) -- Maps.   2
Douglas County (Colo.) -- Pictorial works -- Maps. : Maps  1973 1
Copper mines and mining -- Wisconsin -- Douglas County. : Government Documents  1955 1
Copper ores -- Wisconsin -- Douglas County. : Government Documents  1947 1
Corundum -- Nevada -- Douglas County. : Government Documents  1946 1
Debris avalanches -- Oregon -- Douglas County -- Maps. : Internet  2011 1
Drinking water -- Nevada -- Douglas County. : Government Documents  1992 1
Elk Creek -- Oregon -- Douglas County -- Floods -- Maps. : Maps  1971 1
Employee fringe benefits -- Wisconsin -- Douglas County -- Statistics -- Periodicals. : Government Documents  1992- 1
Environmental protection -- Nebraska -- Douglas County. : Government Documents  1992 1
Environmental protection -- Washington (State) -- Douglas County. : Government Documents  2007 1
Evapotranspiration -- Nevada -- Douglas County. : Internet  2006 1
Floodplains -- Colorado -- Douglas County -- Maps.   2
Floods -- Colorado -- Douglas County -- Maps. : Maps  1972 1
Floods -- Oregon -- Douglas County. : Government Documents  1982 1
Floods -- Oregon -- Douglas County -- Maps. : Maps  1971 1
Forest management -- Oregon -- Douglas County.   4
Douglas County (Ga.) -- Maps, Topographic. : Maps  2003 1
Geochemical prospecting -- Nevada -- Douglas County. : Government Documents  1983 1
Geology -- Colorado -- Douglas County.   4
Geology -- Colorado -- Douglas County -- Maps.   8
Geology -- Kansas -- Douglas County. : Main Stacks  1960 1
Geology -- Minnesota -- Douglas County -- Maps. : Maps  1919 1
Geology -- Nebraska -- Douglas County. : Internet  1964 1
Geology -- Nevada -- Douglas County -- Maps. : Maps  1989 1
Geology -- Oregon -- Douglas County.   2
Geology -- Oregon -- Douglas County -- Maps.   2
Geology -- South Dakota -- Douglas County. : Main Stacks  1977 1
Geology, Structural -- Colorado -- Douglas County. : Government Documents  1963 1
Geology, Structural -- Wisconsin -- Douglas County -- Maps.   2
Gravel -- Colorado -- Douglas County -- Maps. : Maps  1974 1
Groundwater -- Colorado -- Douglas County -- Maps.   3
Groundwater flow -- Nevada -- Douglas County.   2
Groundwater flow -- Nevada -- Douglas County -- Mathematical models. : Government Documents  1991 1
Groundwater -- Kansas -- Douglas County. : Main Stacks  1960 1
Groundwater -- Nevada -- Douglas County.   6
Groundwater -- Nevada -- Douglas County -- Databases. : Government Documents  1999 1
Groundwater -- Nevada -- Douglas County -- Quality.   3
Groundwater -- Pollution -- Nevada -- Douglas County.   2
Groundwater recharge -- Nevada -- Douglas County.   2
Groundwater -- South Dakota -- Douglas County -- Statistics. : Government Documents  1995 1
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