Gibly, Thomas, 1902- Barbara Celarent : a description scholastic dialectic / by Thomas Gilby. - London : Longman, 1949 - xii, 303 p. : ill. ; 23 cm. Subjects--Personal Names: Thomas, Aquinas, Saint, 1225?-1274 Subjects--Topical Terms: Logic. Dewey Class. No.: 160 GIL