=LDR            22        4500
=001  1203
=082  04$a1996 O'B
=100  1\$aO'Brien, Thomas
=245  10$aThe distribution and location of ringforts in south County Mayo
=260  \\$aDublin :$bUniversity of Dublin, Trinity College,$c1996
=650  \0$aDissertations
=852  \\$bFreeman Library$h1996 O'B