Matches in Library of Congress for { ?s ?p Optical instruments Germany History.. }
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- 2001329045 subject "Optical instruments Germany History.".
- 2006502612 subject "Optical instruments Germany History.".
- 85146038 subject "Optical instruments Germany History.".
- 89200266%2F%2Fr90 subject "Optical instruments Germany History.".
- 93845395 subject "Optical instruments Germany History.".
- 94235187%2F%2Fr95 subject "Optical instruments Germany History.".