Career
Author of book Historia Bizancjum ("History of Byzantine Empire") and co-author of Wielka historia powszechna. Murdered by the Nazi German occupants in mass execution in Palmiry.
Author of book Historia Bizancjum ("History of Byzantine Empire") and co-author of Wielka historia powszechna. Murdered by the Nazi German occupants in mass execution in Palmiry.
Zakrzewski was a co-originator of Polish syndicalism movement, activist of Związek Związków Zawodowych, researcher of ancient history (mainly late-ancient) and culture of Byzantine Empire.