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Evidence of the absence of long-lived isotopes of promethium from fission of uranium, and the purification of promethium for the establishment of a primary spectrographic standard

Published Year

• 1960-1969 (1)

Subject

• Isotopes (1)
• Promethium--Isotopes (1)
• Uranium (1) *

Author

• Orr, P. B. (1)
• Pressly, R. S. (1) *
• Spitzer, E. J. (1)

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