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- 50048891 contributor B1195138.
- 50048891 contributor B1195139.
- 50048891 created "1930]".
- 50048891 date "1930".
- 50048891 date "1930]".
- 50048891 dateCopyrighted "1930]".
- 50048891 extent "32 p.".
- 50048891 issued "1930".
- 50048891 issued "1930]".
- 50048891 language "eng".
- 50048891 publisher "[Washington, U.S. Govt. Print. Off.,".
- 50048891 spatial "United States.".
- 50048891 subject "Roads United States.".
- 50048891 subject "Soils.".
- 50048891 subject "TE23 .A5 1930b".
- 50048891 title "Subgrade soil exhibit of the Bureau of Public Roads, United States Department of Agriculture. Sixth Congress of the Permanent International Association of Road Congresses, Washington, 1930.".
- 50048891 type "text".