00295nam a2200109Ia 4500082002000000100002100020245009200041260002700133300001500160500000500175700000500180  a309.25bC432.SV  aChadwick, George  aSystems view of planning; towards a theory of the urban and regional planning processb  aOxfordbPergamonc1971  axiv, 390p.  a  a