SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA - REPORT OF PROGRESS P. DESCRIPTION OF THE COAL FLORA OF PENNSYLVANIA AND OF THE CARBONIFEROUS FORMATION THROUGHOUT THE UNITED STATES BY LEO LESQUEREUX; ©1879 |
Tables of Contents:
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All Four Volumes: Scans and Webpage ©George Langford III, 2011 |
The sign (-) indicates that the species is present at all
the localities of the column.
Symbol (°) indicates uncertain geological distribution or locality. Erratum: In Column G (Bituminous), subsitute St. Clairsville for Helansville. |