. Spectroradiometric Investigation of the Transmission of Various Substances, II: Infra-red transmission characteristics of organic oils and other substances . WASHINGTON GOVERNMENT PRINTING OFHCE 1922 DEPARTMENT OF COMMERCE Scientific Papers OF THE Bureau of Standards S. W. STRATTON, Director No. 418 spectroradiometric investigation of thetransmission of various substances, ii W. W. COBLENTZ, Physicist Bureau of Standards AUGUST 29, 1921spectroradiometr17267unse

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