(1990). Environmental policies for cities in the 1990s. Paris: Organisation for Economic Co-operation and Development.
Παραπομπή Chicago StyleEnvironmental Policies for Cities in the 1990s. Paris: Organisation for Economic Co-operation and Development, 1990.
Παραπομπή MLAEnvironmental Policies for Cities in the 1990s. Paris: Organisation for Economic Co-operation and Development, 1990.
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