=LDR            22        4500
=001  3637
=082  04$a577 KRE
=100  1\$aKrebs, Charles J.
=245  10$aThe message of ecology
=260  \\$aLondon :$bHarper & Row,$c1988
=650  \0$aBooks
=852  \\$bFreeman Library$h577 KRE