Matches in Library of Congress for { ?s ?p Inventions Economic aspects.. }
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- 2001004551 subject "Inventions Economic aspects.".
- 2001094711 subject "Inventions Economic aspects.".
- 2004269776 subject "Inventions Economic aspects.".
- 2007935151 subject "Inventions Economic aspects.".
- 2009941617 subject "Inventions Economic aspects.".
- 81470486 subject "Inventions Economic aspects.".
- 83199386 subject "Inventions Economic aspects.".
- 86003945 subject "Inventions Economic aspects.".
- 88208189 subject "Inventions Economic aspects.".
- 91043234 subject "Inventions Economic aspects.".