Jansen, G. M. A. An existential approach to theology [by] G. M. A. Jansen. - Milwaukee Bruce Pub. Co. [1966] - xii, 128 p. 23 cm. - Impact books . Bibliography: p. 125-126. LCCN: 66026657 Subjects--Topical Terms: Theology, Doctrinal--Popular works. LC Class. No.: BT77 / .J3 Dewey Class. No.: 230