=LDR 00000nam a2200000ui 4500 =001 1644 =008 250530nuuuu\\\\xx\|||||||||||||||||eng\d =082 04$a333.7 JOH =100 1\$aJohnston, R. J. =245 10$aEnvironmental problems =260 \\$aLondon :$bBelhaven =852 \\$bFreeman Library$cBooks$h333.7 JOH