=LDR 22 4500 =001 5832 =082 04$a1999 COU =100 1\$aCoughlan, Brian =245 10$aThe use of standard land drainage pipe as an artificial substrate for freshwater macro-invertebrates =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1999 =650 \0$aTheses =852 \\$bGeography Basement$h1999 COU