@Article{166846,
     author = "Ignacy Zenon Siemion",
     title = "Osiemnastowieczne analizy chemiczne opali z Radomyśla ",
     year =  1992,
     volume =  37,
     number =  1,
     journal =  Kwartalnik Historii Nauki i Techniki,
     pages =  s. 63-68,
    }