kw.\*:("SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA")
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ECONOMICS, SCIENCE, AND POLITICS; ESTABLISHMENT OF THE SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA = ECONOMIE, SCIENCE ET POLITIQUE ETABLISSEMENT DU SECOND LEVE GEOLOGIQUE DE LA PENNSYLVANIEPIERCE NORMAN A; JORDAN WILLIAM M; WRIGHT TO et al.1982; ABSTR. PROGRAMS - GEOL. SOC. AM.; ISSN 0016-7592; USA; DA. 1982-02; VOL. 14; NO 1-2; PP. 73Conference Paper
