BOOKQUE

Soil Survey of Columbia County, Oregon
William George Harper , Edward Fritchoff Torgerson , E. F. Torgerson
· 1929
Soil Survey of the Buckeye-Beardsley Area, Arizona
William George Harper
· 1930
Soil Survey, Yuma Desert Area, Arizona
William George Harper , Edwin Noel Poulson , J. Clark Foulger
· 1941
Soil Survey of the Yuma Desert Area, Arizona
William George Harper , Edwin Noel Poulson , J. Clark Foulger
· 1941
Soil Survey of the Brighton Area, Colorado
William George Harper , Lloyd Acott , Elmer Frahm
· 1935
Soil Survey of Auburn Area, California
Stanley Wallace Cosby , Ebenezer Bliss Watson , William George Harper
· 1928
Soil Survey of the Roswell Area, New Mexico
William George Harper
· 1933
Soil Survey of the Gila Bend Area, Arizona
Francis Ogden Youngs , William George Harper , Theodore William Glassey , M. R. Isaacson
· 1931
Soil Survey, the Umatilla Area, Oregon
William George Harper , Francis Ogden Youngs , Edward Fritchoff Torgerson , R. D. Lewis
· 1948
Soil Survey of the Coachella Valley Area, California
Arthur E. Kocher , William George Harper
· 1927