(1974). Swiss national development concepts. Zurich: Institute for National, Regional and Local Planning at the Swiss Federal Institute of technology.
Παραπομπή Chicago StyleSwiss National Development Concepts. Zurich: Institute for National, Regional and Local Planning at the Swiss Federal Institute of technology, 1974.
Παραπομπή MLASwiss National Development Concepts. Zurich: Institute for National, Regional and Local Planning at the Swiss Federal Institute of technology, 1974.
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