LASKOWSKI OTTON ; PAWŁOWSKI BRONISŁAW. research of old Polish military history. Tasks of work and general characteristics of sources. W-wa 1927. military historical bureau. Print. Ministrwa Spraw Wojskowych. Format 17/25 cm. p. 47. Broch. ed. Author's dedication to Prof. Stanisław Kościałkowski. Cover broch. Publisher, block perforated at margin. [S. Kosciałkowski 1881 - 1960. educator, historian, researcher of the history of the Grand Duchy of Lithuania. Co-organizer of the Stefan Batory Univ. in Vilna, last president of the Society of Friends of Sciences in Vilna.]. .(AJ).