Perepiska Karla Bera po Problemam Geografii. (Correspondence of Karl von Baer on Problems of Geography.);Karl Ber i Peterburgskaya Akademiya Nauk. (Karl von Baer and the Petersburg Academy of Sciences.);Pis'ma Karla Bera uchenym Peterburga. (Karl von Baer's Letters to Members of the Petersburg Academy of Sciences.);Iz Epistolyarnogo Naslediya K. M. Bera v Arkhivakh Evropy. (From the Epistolary Legacy of Karl von Baer in the Archives of Europe.)by Karl Ernst von Baer; T. A. Lukina