Matches in Library of Congress for { ?s ?p Technological innovations Economic aspects History 20th century.. }
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- 00054703 subject "Technological innovations Economic aspects History 20th century.".
- 2005618333 subject "Technological innovations Economic aspects History 20th century.".
- 2011421363 subject "Technological innovations Economic aspects History 20th century.".
- 83233350 subject "Technological innovations Economic aspects History 20th century.".
- 93246685 subject "Technological innovations Economic aspects History 20th century.".
- 95461920 subject "Technological innovations Economic aspects History 20th century.".
- 96025420 subject "Technological innovations Economic aspects History 20th century.".