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Letter Circular 454; hues of the spectrum colors (IA lettercircular45454nati).djvu
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Title
Letter Circular 454: Hues of the Spectrum Colors
,
NBSLCIRC 454
Author
National Bureau of Standards
Year
1935
Publisher
National Bureau of Standards
Source
djvu
Progress
Proofread—All pages of the work proper are proofread, but not all are validated
Transclusion
Index not transcluded or unreviewed
Pages
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Page Status
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