The determination of uranium isotope abundances and reactor fuel burnup by mass spectrometry /

April 17, 1963--page 11.

Has the earth's crust changed with time? : rare earth abundances in ancient sediments /

"May 1967."

Nuclear data : a collection of experimental values of half-lives, radiation energies, relative isotopic abundances, nuclear moments and cross sections /

Bibliography: p. 275-309.

The complex broad-band X-ray spectra of Seyfert galaxies /

Cover: Laboratory for High Energy Astrophysics.

Nuclear data : a collection of experimental values of half-lives, radiation energies, relative isotopic abundances, nuclear moments, and cross sections.

sup. 1. January to July 1950 -- sup. 2. July 1950 to January 1951 -- sup. 3. January to July 1951.