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The drums of jeopardy, by Harold MacGrath; illustrated by Ralph Allen Pallen Coleman.Harold MacGrath1920
Petrology of the Pennsylvanian underclays of Illinois, by Ralph E. Grim and Victor T. Allen.Ralph Grim1938EN
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Jewish Antiquities. Books XV-XVII. With an English Translation by Ralph Marcus. Completed and edited by Allen Wikgren. PDF22 MBEN