(1930). U.S. global competitiveness: Optical fibers, technology and quipment. Washington: United States Trade Commission.
Čikaški stil citiranjaU.S. Global Competitiveness: Optical Fibers, Technology and Quipment. Washington: United States Trade Commission, 1930.
MLA način citiranjaU.S. Global Competitiveness: Optical Fibers, Technology and Quipment. Washington: United States Trade Commission, 1930.
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