RT Article T1 Re-Opening the Dialogue with the “Horizontalists” JF The ecumenical review VO 21 IS 4 SP 289 OP 298 A1 Berkhof, Hendrikus 1914-1995 LA English YR 1969 UL https://ixtheo.de/Record/1937263274 DO 10.1111/j.1758-6623.1969.tb02285.x