Toenges, Albert L.; Turnbull, Louis A.; Neale, Arthur; Schopf, J. M.; Abernethy, R. F. & Quinn, Alonzo W. Investigation of Meta-Anthracite in Newport and Providence Counties, Rhode Island: Petrography, Chemical Characteristics, and Geology of Deposits: I. Investigation of the Field and the Physical and Chemical Characteristics of the Deposits; II. Preliminary Geologic Study of the Portsmouth and Cranston Areas, Rhode Island; III. General Conclusions. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc38492/. Accessed March 2, 2015.
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