000 00503 a2200145 4500
080 _a631.4:778
_bJ 52 O
245 1 _aOrigin, distribution and airphoto identification of United States soils with special reference to airport and highway engineering
_cby D.S. Jenkins, et. al.
260 _aWashington, D.C.
_c1946
650 _aSoils
650 _aEngineering
440 _aNo. 52
_vU.S. Department of Commerce, Civil Aeronautics Admi
100 1 _aJenkins, D.S.
_d
300 _a202 p.
901 _a21391
999 _c43749
_d43749