B. A. Hart
Identifiers
- Open LibraryOL1952121A
Top Subjects
- United States (2)
- Ionospheric radio wave propagation (1)
- Radio waves -- Diffraction (1)
- Telephone -- United States (1)
- Telephone companies -- United States (1)
Books by B. A. Hart
Total count: 3
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Local and diurnal variations in ground-based radio refractivity gradients at tropical locationsFor sale by the Supt. of Docs., U.S. Govt. Print. Off.1971-01-01
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Geographical areas serviced by Bell and independent telephone companies in the United StatesU.S. Dept. of Commerce, Office of Telecommunications; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1973-01-01
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Telephone density and telephone company area dataU.S. Office of Telecommunications; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1973-01-01