=LDR            22        4500
=001  3995
=082  04$a1990 O'B
=100  1\$aO'Brien, David
=245  10$aOn-site wastewater treatment in Ireland
=260  \\$aDublin :$bUniversity of Dublin, Trinity College,$c1990
=650  \0$aTheses
=852  \\$bFreeman Library$h1990 O'B