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File:AmCyc Anthracite - strata.jpg

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Description
English: Diagram of the strata for the anthracite deposits in Pennsylvania.
Date published 1879
Source The American Cyclopædia, v. 1, 1879, between p. 550.
Author J. Peter Lesley?
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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:AmCyc_Anthracite_-_strata.jpg

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current16:23, 17 October 2013Thumbnail for version as of 16:23, 17 October 2013559 × 3,022 (206 KB)Bob Burkhardt{{Information |Description={{en|Diagram of the strata for the anthracite deposits in Pennsylvania.}} |Source=''The American Cyclopædia'', v. 1, 1879, between p. 550. |Date=published 1879 |Author=S. Harries Daddow |Permission={{PD-1923}} |other_version...

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