Ladner, Gerhart Burian, 1905- The idea of reform, its impact on Christian thought and action in th e age of the Fathers / Gerhart Burian Ladner. - Cambridge : Harvard University Press, 1959. - 553 p. ; 23 cm. Includes bibliographical references. Subjects--Topical Terms: Theology, Doctrinal --History ----Early church.-- Dewey Class. No.: 230.09