=LDR            22        4500
=001  5310
=082  04$a711 MAR
=100  1\$aMarshall, John U.
=245  10$aThe structure of urban systems
=260  \\$aToronto :$bUniversity of Toronto Press,$c1989
=650  \0$aBooks
=852  \\$bFreeman Library$h711 MAR