983 resultados para Middle States
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Mode of access: Internet.
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Mode of access: Internet.
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Pts. 1-8, 1901-19 by Robert Ridgway; pt. 9-10, 1941-46 by Robert Ridgway, completed by Herbert Friedmann; pt. 11- , 1950- by Friedmann.
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Mode of access: Internet.
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Mode of access: Internet.
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Bibliography: v. 1, p. xvii-xxvii.
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Prepared in cooperation with the Pennsylvania Geological Survey.
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Mode of access: Internet.
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Includes index.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Vol. 2 has title: Middle East: tricontinental hub; a bibliographic survey.
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Mode of access: Internet.