Matches in Library of Congress for { <http://lccn.loc.gov/50002537> ?p ?o. }
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- 50002537 contributor B1174985.
- 50002537 created "[1950]".
- 50002537 date "1950".
- 50002537 date "[1950]".
- 50002537 dateCopyrighted "[1950]".
- 50002537 extent "36 p.".
- 50002537 issued "1950".
- 50002537 issued "[1950]".
- 50002537 language "eng".
- 50002537 publisher "Washington".
- 50002537 subject "507".
- 50002537 subject "Q181 .N387".
- 50002537 subject "Science Study and teaching.".
- 50002537 subject "Teaching Aids and devices.".
- 50002537 title "How science teachers use business-sponsored teaching aids; report of a study.".
- 50002537 type "text".