=LDR            22        4500
=001  1644
=082  04$a333.7 JOH
=100  1\$aJohnston, R. J.
=245  10$aEnvironmental problems
=260  \\$aLondon :$bBelhaven
=650  \0$aBooks
=852  \\$bFreeman Library$h333.7 JOH