Clayton F Spears

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1) Soil survey: Morgan County, Colorado

Author

Spears, Clayton F

Pub. Date

1969

2) Soil survey of Gunnison area, Colorado: parts of Gunnison, Hinsdale, and Saguache Counties

Author

Hunter, William R

Pub. Date

1975

3) Soil survey: Delta-Montrose area : Colorado

Author

Pub. Date

1967