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A Guide to Swelling Soils for Colorado Homebuyers and Homeowners
by David C. Noe
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Ages: 3 years and up
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Ages: 1 year and up
Ground Water Atlas of Colorado (Special Publication 53)
by Ralf Topper, Karen L. Spray, et al.
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Gold Panning and Placering in Colorado--How and Where (Information Series Number 33)
by Jr. Parker, Ben H.
Tourist Guide to Colorado Geology
by Vincent Matthews
Geologic Road Log Cumbres & Toltec Scenic Railroad
by Shari Kelley, Peter Barkmann, et al.
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Ages: 10 years and up
