The origin, distribution, and airphoto identification of United States soils. With special reference to airport and highway engineering [microform] - Jenkins, D. S. (Washington, D.C. Photoduplication Service, Library of Congress.)
MIcrofilmed with U.S. Civil Aeronotics Administration. Airphoto patterns of soils... [Washington D.C.] 1948.
Originally published by United States Dept. of Commerce, Civil Aeronautics Adminstration, Washington,1946.
Keywords: Soils -- United States; Soil mechanics