W. L. Wiese, M. W. Smith, and B. M. Glennon
U.S. Dept. of Commerce, National Bureau of Standards : for sale by the Superintendent of Documents, U.S. Govt. Print. Off.
1966-
National standard reference data series
NSRDS-NBS 4 . Atomic transition probabilities : a critical data compilation ; v. 1
Available at 25 libraries