Warren, Max, 1904-1977. Challenge and response : six studies in missionary opportunity. - New York : Morehouse-Barlow Co, [c1959]. - 148 p ; 19 cm. Includes bibliography. LCCN: 59014258 Subjects--Topical Terms: Missions. LC Class. No.: BV2063 / .W33 Dewey Class. No.: 266