=LDR 00000nam a2200000ui 4500 =001 5211 =008 250530s1972\\\\xx\|||||||||||||||||eng\d =082 04$a526.022 MAS =100 1\$aMassum, Bryan H. =245 10$aThe spatial structure of administrative systems =260 \\$bAssociation of American Geographers,$c1972 =852 \\$bFreeman Library$cPamphlets$h526.022 MAS