Willems, B. A. 1926-. Karl Barth: an ecumenical approach to his theology / B.A. Willems ; translated by Matthew J. van Velzen . - Glen Rock : Paulist Press (Paulist Fathers), 1965 . - 128 p. 18 cm. - (Deus books ; 95c ) Subjects--Personal Names: Barth, Karl 1886-1968