=LDR 00000nam a2200000ui 4500 =001 4848 =008 250530s1995\\\\xx\|||||||||||||||||eng\d =082 04$a1995 FIN =100 1\$aFinnegan, Paula =245 10$aThe role of the common garden snail Helix aspersa as an effective biological monitor of lead in the terrestrial environment =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1995 =852 \\$bGeography Basement$cTheses$h1995 FIN