=LDR 22 4500 =001 4081 =082 04$a363.739 FLA =100 1\$aFlanagan, P. J. =245 10$aParameters of water quality: interpretation and standards =260 \\$aDublin :$bEnvironmental Research Unit,$c1988 =650 \0$aBooks =852 \\$bFreeman Library$h363.739 FLA