RT Article T1 Gentle Skeptics?: American Catholic Encounters with Polygenism, Geology, and Evolutionary Theories from 1845 to 1875 JF The catholic historical review VO 82 IS 1 SP 40 OP 76 A1 Astore, William J. LA English YR 1996 UL https://ixtheo.de/Record/1788071719 DO 10.1353/cat.1996.0031