Παραπομπή APA

(1971). Papers from the Seminar on Threshold Analysis: Conference, 29 May 1970. London: Centre for Environmental Studies.

Παραπομπή Chicago Style

Papers From the Seminar On Threshold Analysis: Conference, 29 May 1970. London: Centre for Environmental Studies, 1971.

Παραπομπή MLA

Papers From the Seminar On Threshold Analysis: Conference, 29 May 1970. London: Centre for Environmental Studies, 1971.

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