=LDR            22        4500
=001  155
=082  04$a1997 MAC
=100  1\$aMacMahon, Helen
=245  10$aAn analysis of geographic information systems in Ireland: problems and potential solutions
=260  \\$aDublin :$bUniversity of Dublin, Trinity College,$c1997
=650  \0$aTheses
=852  \\$bFreeman Library$h1997 MAC