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On the relations of the Niagara and Lower Helderberg formations, and their geographical distributions in the United States and Canada
1874, s.n.]
Microform
in English
0665344368 9780665344367
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Edition Notes
Caption title.
"From the Proceedings of the American Association for the Advancement of Science, Portland Meeting, August, 1873."
Criticism of A.H. Worthen's article, Remarks on the relative age of the Niagara and so-called Lower Helderberg groups.
Filmed from a copy of the original publication held by the Library of Congress, Photoduplication Service. Ottawa : Canadian Institute for Historical Microreproductions, 1982.
p. 321-335 ; 23 cm.
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Feedback?August 11, 2020 | Edited by MARC Bot | remove fake subjects |
September 2, 2010 | Created by ImportBot | initial import |