Number of items:
1
.
Speisman, Gerald
(1955)
The Neutron-Proton Mass Difference.
Dissertation (Ph.D.), California Institute of Technology.
doi:10.7907/SSHW-9C33.
https://resolver.caltech.edu/CaltechETD:etd-01222004-092833
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Wed Dec 17 19:19:57 2025 UTC
.