E. N. Poulson

Soil survey, Yuma desert area, Arizona

1941

Soil survey of the Casa Grande area, Arizona

Soil survey of the Socorro and Rio Puerco areas, New Mexico

Soil survey of the upper Gila Valley area, Arizona

Soil survey, the Casa Grande area, Arizona

Soil survey, Sulphur Spring Valley area, Arizona

Soil survey of the Bear Lake Area, Idaho

Soil survey of the Blackfoot-Aberdeen Area, Idaho

Soil survey of Whatcom County Washington

Soil survey of Benewah county, Idaho

Soil survey, the Duncan area, Arizona-New Mexico

Soil survey of Whatcom County Wash

Soil survey of the Jerome Area, Idaho

Soil survey of the Sulphur Spring Valley Area, Arizona