Keller, O. St. Petersburg and its environs : Finland, Kiev, Odessa, Warsaw, Riga, a tour on the Volga, the Crimea and the Caucasus : with plans of St. Petersburg, railway map of Russia, sketches of the Hermitage and of the museum of Alexander III / by Otto Keller , illustrations by Moissonas & Eggler, Photographers and by the author; O. Keller .— : [Б.и.] .— 215 с. — Lang: eng .— URL: https://rucont.ru/efd/101407 (дата обращения: 10.11.2025)