State coordinates and polyconic maps. Some notes on the state plane-coordinate systems and their relation to polyconic quadrangle maps. Prepared by Topographic Division, Research and Technical Control Branch.

By: Material type: TextTextSeries: Geological Survey circular ; no. 57Publication details: Washington, 1949.Description: 7 p. illus. 27 cmSubject(s): LOC classification:
  • QE75 .C5 n. 57
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