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- 50003593 contributor B1175705.
- 50003593 created "1949]".
- 50003593 date "1949".
- 50003593 date "1949]".
- 50003593 dateCopyrighted "1949]".
- 50003593 extent "54 p.".
- 50003593 issued "1949".
- 50003593 issued "1949]".
- 50003593 language "eng".
- 50003593 publisher "[Washington,".
- 50003593 subject "LB1043.5 .U53 1949".
- 50003593 subject "Visual education.".
- 50003593 title "What research shows about visual aids: movies, slidefilms, exhibits, pictures, charts, posters.".
- 50003593 type "text".