@Article{149727,
     author = "Maria Soja",
     title = "Demographic development and changes of land-use in the Beskid Niski Mountains, Poland, between 1869 and 2009 ",
     year =  2012,
     volume =  ,
     number =  18,
     journal =  Bulletin of Geography. Socio-Economic Series,
     pages =  s. 109-115,
    }