Contrast sensibility of the eye
By: by Enoch Karrer, associate physicist, E. P. T. Tyndall, assistant physicist, Bureau of Standards.  Issued March 8, 1920.
Contributors: Tyndall, Edward P. T.
Series: Scientific papers of the Bureau of Standards,; no. 366
Publisher: Govt. Print. Off.
Published: 1920
Place of publication: Washington
Language: eng
Number of pages: 692
Subjects: Vision.