@article{959824,
      recid = {959824},
      author = {Witkowski, Andrzej, and Kowalczyk, Andrzej. and Vrba, J.},
      title = {Groundwater vulnerability assessment and mapping :  selected papers from the Groundwater Vulnerability  Assessment and Mapping International Conference : Ustrón,  Poland, 2004 /. Groundwater Vulnerability Assessment and  Mapping International Conference},
      publisher = {Taylor & Francis,},
      address = {London ;},
      pages = {xiii, 260 p. :},
      year = {2007},
      url = {http://library.usi.edu/record/959824},
}