Chronological research in the field of Russian and Livonian history, in the XIII and XIV centuries / op. August Engelmann [auth. pref. Ives. Engelman]. - St.Petersburg: type. Acad. Sciences, 1858. - VIII, 220 with. ; 23 cm. - Bibliograf. in the note.
BBC 63.3 (2) 42-6 BBK 63.227 BBK 63.3 (4Gem) 4-6
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