00355nam a2200109Ia 4500008004100000082002700041100001800068245005400086260003100140300002300171490005100194251203b        |||||||| |||| 00| 0 eng d  a309.262015191bW372.IT  aWebber, M. J.  aInformation theory and urban spatial structureb/  aLondon:bCroom Helm,c1979  a394p. Index, Bibl.  aCroom Helm series in Geography and Environment