"World Council of Churches." . . "Ökumene." . . "Geschichte 1900-2000" . . . . . . . . "Unity in today's world : the Faith and Order studies on \"Unity of the Church - unity of humankind\"" . . "Unity in today's world the Faith and order studies on : \"Unity of the church - unity of humankind\"" . . "Unity in today's world : the Faith and Order studies on \"Unity of the church-unity of humankind\"" . . . . . "Unity in today's world : the Faith and Order studies on \"Unity of the Church-unity of humankind\"" . . . "Unity in today's world : the faith and order studies on \"unity of the church-unity of humankind" . . . . . . . . "Unity in today's world : the Faith and Order studies on \"Unity of the Church, unity of humankind\"" . . . . . . . . . . . . . . "oecuménisme [études diverses]" . . "International organization , Addresses, essays, lectures." . . "Église Unité." . . "Christliche Ethik." . . "Menschheit." . . "Eenheid van de Kerk." . . "Christian union , Addresses, essays, lectures." . . "Faith and Order." . . . .