Παραπομπή APA

(1971). Direct energy requirements of Ontario manufacturing industries, 1971. Ontario: Office of Economic Policy.

Παραπομπή Chicago Style

Direct Energy Requirements of Ontario Manufacturing Industries, 1971. Ontario: Office of Economic Policy, 1971.

Παραπομπή MLA

Direct Energy Requirements of Ontario Manufacturing Industries, 1971. Ontario: Office of Economic Policy, 1971.

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