View of a chemist checking the refractive index of an oil sample in a refractometer at the Norda Company plant in Boonton, New Jersey.
|Original file type||TIFF|
|View in library catalog|
Norda Essential Oil and Chemical Company. “Refractometer,” 1950–1959. Norda Essential Oil and Chemical Company Photograph Collection, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/pc289j04q.
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