Warren, Max, 1904-1977., The calling of God : four essays in missionary work / by Max Warren. - London : Lutterworth Press, (c)1944. - x, 66 pages ; 22 cm. - Lutterworth library ; v. 17 . Includes bibliographies and index. Subjects--Topical Terms: Missions--History. LC Class. No.: BV2120 / .C355 1944