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2. Quality of water resources of the Ouachita National Forest, Arkansas
3. Quaternary geologic map of the Blue Ridge 4° x 6° quadrangle, United States
4. Quaternary geologic map of the Boston 4° x 6° quadrangle, United States and Canada
5. Quaternary geologic map of the Des Moines 4° x 6° quadrangle, United States
6. Quaternary geologic map of the Louisville 4° x 6° quadrangle, United States
7. Quality of freshwater in aquifers of Louisiana, 1988
8. Quaternary geologic map of the Hudson River 4° x 6° quadrangle, United States and Canada
9. Quaternary geologic map of the Austin 4° x 6° quadrangle, United States
10. Quaternary geologic map of the Monterrey 4° x 6° quadrangle, United States
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