Number of items:
1
.
Clark, Barry Gillespie
(1964)
The Twenty-One Centimeter Hydrogen Line in Absorption.
Dissertation (Ph.D.), California Institute of Technology.
doi:10.7907/385M-0W22.
https://resolver.caltech.edu/CaltechETD:etd-09112002-180017
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Wed Dec 17 12:01:28 2025 UTC
.