Matches in Library of Congress for { ?s ?p Light Wave-length Congresses.. }
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- 00711254 subject "Light Wave-length Congresses.".
- 2002277395 subject "Light Wave-length Congresses.".
- 2002280005 subject "Light Wave-length Congresses.".
- 2003268437 subject "Light Wave-length Congresses.".
- 2004042706 subject "Light Wave-length Congresses.".
- 2012359732 subject "Light Wave-length Congresses.".