Image
Source
Stanford Research Institute., and Western Oil and Gas Association. The Smog Problem in Los Angeles County: Second Interim Report on Studies to Determine the Nature and Sources of the Smog. Los Angeles: Committee on Smoke and Fumes, Western Oil and Gas Association, 1949. https://catalog.hathitrust.org/Record/102203236
Language
English
English
apparatus used by Stanford Research Institute to measure blink rates in connectin to smog in LA, c. 1949