View of a chemist checking the optical rotation of an oil sample on a polariscope at the Norda Company plant in Boonton, New Jersey.
|View in library catalog|
Norda Essential Oil and Chemical Company. “Polariscope,” 1950–1959. Norda Essential Oil and Chemical Company Photograph Collection, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/g445cd121.
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