Matches in Library of Congress for { <http://lccn.loc.gov/50031469> ?p ?o. }
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- 50031469 contributor B1190480.
- 50031469 created "[c1950]".
- 50031469 date "1950".
- 50031469 date "[c1950]".
- 50031469 dateCopyrighted "[c1950]".
- 50031469 extent "161 p. :".
- 50031469 issued "1950".
- 50031469 issued "[c1950]".
- 50031469 language "eng".
- 50031469 publisher "[Southbridge, Mass.] : American Optical Co.".
- 50031469 subject "617.75".
- 50031469 subject "Eye Examination.".
- 50031469 subject "Lenses.".
- 50031469 subject "QP475 .A5".
- 50031469 title "Publications of the Bureau of Visual Science / American Optical Company.".
- 50031469 type "text".