VL Technology [tec3040]

		Perimeter for Mapping Retinal Zones Perimeter for Mapping Retinal Zones
	Source	Titchener, Edward Bradford. 1910. The Quality of Sensation: Vision. In: A Textbook of Psychology (1910), 59-92.
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	Comment	See a photograph of a similar device.
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ISSN 1866-4784: reference - xlink