Configuration of the bedrock surface of the District of Columbia and vicinity. This report embodies subsurface data of interest to engineers and builders compiled from 1890 to 1940.

By: Material type: TextTextPublication details: Washington : U.S. Govt. Print. Off., 1950.Description: 42 p. : ill., maps (part col., 4 in pocket) ; 29 cmSubject(s): DDC classification:
  • 552
LOC classification:
  • QE75 .P9 no. 217
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