File:Photoelectric glottograph in use.jpg

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Summary

Description
English: Speaker recording with photoelectric glottograph, showing perspex rod transmitting light to neck
Date
Source Own work
Author RoachPeter

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Captions

Speaker recording with photoelectric glottograph in place

Items portrayed in this file

depicts

8 March 1978

File history

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Date/TimeThumbnailDimensionsUserComment
current12:17, 15 December 2020Thumbnail for version as of 12:17, 15 December 20201,566 × 1,441 (465 KB)RoachPeterUploaded own work with UploadWizard
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