@Article{69480, author = "Andrzej Machalski", title = ""500 zagadek z historii techniki", Bolesław Orłowski, Warszawa 1965 : [recenzja] ", year = 1970, volume = 15, number = 2, journal = Kwartalnik Historii Nauki i Techniki, pages = s. 362-366, }