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897052
COMMERCE
OCEANIC AND ATMOSPHERIC ADMINISTRATION
NATIONAL GEODETIC NETWORK
WASHINGTON. D. c.
February I973
WASHINGTON
DIAGRAM
OF
TRIANGULATION
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Each 30 mlnule quadrangle (shown in blue)
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digit number showing successively degrees of
latilude, degrees of longitude, and position in
ils one degree quadrangle.
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No/e: Data may be requested by quadrangle.
county. or other unit. Since publication of data
in quadrangle units may not be complete for this
State. requests for information by quadrangle
number will be supplied with data in wHatever
form is available.
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BASE MAP
BY
UNITED STATES
O~ARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
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