Παραπομπή APA

(1961). The chemical industry 1967-1968. Paris: Organization for Economic Cooperation and Development.

Παραπομπή Chicago Style

The Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.

Παραπομπή MLA

The Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.

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