@Article{236855,
     author = "Jadwiga Grabowska",
     title = "Poglądy Krzysztofa Kulka na surowce kopalne ",
     year =  1992,
     volume =  37,
     number =  4,
     journal =  Kwartalnik Historii Nauki i Techniki,
     pages =  s. 99-110,
    }