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Number of items: 1. Bergman, Carl William (1954) Studies of experimental techniques for sounding the ionosphere at low and very low radio wave frequencies. Engineer's thesis, California Institute of Technology. doi:10.7907/MQ5A-1M44. https://resolver.caltech.edu/CaltechETD:etd-11212003-162356 This list was generated on Wed Jun 7 12:09:05 2023 UTC. |