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Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857 /

Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857 /

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date_range

Date

01/01/1857
person

Contributors

Rogers, Henry D. (Henry Darwin), 1808-1866.
W. & A.K. Johnston Limited.
Geological Survey of Pennsylvania.
create

Source

Library of Congress
copyright

Copyright info

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