1850-1923 1920- begleri businessmen byzantine churchbuildings conservationandrestoration constantinople(ecumenicalpatriarchate) correspondence firesandfireprevention greece greece) historians history historyconstantinople(ecumenicalpatriarchate) historyhilandar(monastery:athos historyorthodoxeasternchurch historyrusskīĭarkheologicheskīĭinstitutvkonstantinopoli͡e membershiporthodoxeasternchurch monasticandreligiouslife monasticismandreligiousorders muralpaintinganddecoration oldbelievers orthodoxeasternchurch orthodoxeasternmonasteries orthodoxeasternmonasticismandreligiousorders pictorialworks relations russia russians russkai͡apravoslavnai͡at͡serkovʹ sources spirituality srpskapravoslavnacrkva takēs tloupas