Commoner, B. (1972). The closing circle: Confronting the environmental crisis. London: Jonathan Cape.
Παραπομπή Chicago StyleCommoner, Barry. The Closing Circle: Confronting the Environmental Crisis. London: Jonathan Cape, 1972.
Παραπομπή MLACommoner, Barry. The Closing Circle: Confronting the Environmental Crisis. London: Jonathan Cape, 1972.
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