Matches in Library of Congress for { ?s ?p Exchanges of patents and technical information.. }
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- 2005361201 subject "Exchanges of patents and technical information.".
- 81461226 subject "Exchanges of patents and technical information.".
- 86132744 subject "Exchanges of patents and technical information.".
- 95080579 subject "Exchanges of patents and technical information.".
- 98039653 subject "Exchanges of patents and technical information.".