00317nam a2200109Ia 4500008004000000082001600040100004000056245005400096260003300150300001200183650001200195210210b1973   xxu||||| |||| 00| 0 eng d  a307.76 WALC  aWALTON (John) and CARNS (Donald E).  aCities in change: studies on the urban condition.  aBoston.bAllyn & Baconc1973  axvi,716  aUrban