John Climacus
John Chryssavgis - Paperback
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Nikolaos Asproulis is deputy director of the Volos Academy for Theological Studies and lecturer in the Studies in Eastern Orthodox Theology Postgraduate Program at Hellenic Open University. John Chryssavgis is archdeacon of the Ecumenical Patriarchate and theological advisor to Ecumenical Patriarch Bartholomew on environmental issues.