=LDR 22 4500 =001 5815 =082 04$a551.447 DRE =100 1\$aDrew, David =245 10$aThe use of bacteriophages for multi-tracing in a lowland karst aquifer in western Ireland =260 \\$c1997 =650 \0$aPamphlets =852 \\$bFreeman Library$h551.447 DRE