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1.
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United States Federal Works Agency, Works Progress Administration, Division of Research
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2.
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prepared under the direction of Theodore E. Whiting
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3.
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United States. Work Projects Administration
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4.
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by Gladys L. Palmer and Katherine D. Wood
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5.
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by F. L. Carmichael and R. Nassimbene
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6.
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measured and compiled under the direction of George R. Harrison by staff members of the Spectroscopy Laboratory of the Massachusetts Institute of Technology ; assisted by the Works Progress Administration
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