Dyfyniad APA

(1930). U.S. global competitiveness: Optical fibers, technology and quipment. Washington: United States Trade Commission.

Dyfyniad Arddull Chicago

U.S. Global Competitiveness: Optical Fibers, Technology and Quipment. Washington: United States Trade Commission, 1930.

Dyfyniad MLA

U.S. Global Competitiveness: Optical Fibers, Technology and Quipment. Washington: United States Trade Commission, 1930.

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