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- 20026271 contributor B604450.
- 20026271 contributor B604451.
- 20026271 created "1920.".
- 20026271 date "1920".
- 20026271 date "1920.".
- 20026271 dateCopyrighted "1920.".
- 20026271 extent "p. 679-692 incl. illus., diagrs.".
- 20026271 isPartOf "Scientific papers of the Bureau of Standards, no. 366".
- 20026271 issued "1920".
- 20026271 issued "1920.".
- 20026271 language "eng".
- 20026271 publisher "Washington, Govt. Print. Off.,".
- 20026271 subject "QP481 .K3".
- 20026271 subject "Vision.".
- 20026271 title "Contrast sensibility of the eye, by Enoch Karrer, associate physicist, E. P. T. Tyndall, assistant physicist, Bureau of Standards. Issued March 8, 1920.".
- 20026271 type "text".