Numerical mapping of the continents for use in high-frequency skywave radio predictions.
| Author/creator | Zacharisen, Donald H. |
| Other author | Institute for Telecommunication Sciences. |
| Format | Book |
| Publication Info | Boulder, Co. : Institute for Telecommunication Sciences, 1972. |
| Description | iii, 16 pages : illustrations ; 27 cm. |
| Subjects |
| Series | Telecommunications research and engineering report ; 31 Telecommunications research and engineering report ; 31. UNAUTHORIZED |
| General note | At head of title: U. S. Dept. of Commerce. Office of Telecommunications. Institute for Telecommunication Sciences. |
| Bibliography note | Includes bibliography. |
| Govt. docs number | C 1.60:31 |