Ionospheric research at Huancayo Observatory, Peru, January, 1938-June, 1946.
| Údar corparáideach: | |
|---|---|
| Formáid: | LEABHAR | 
| Teanga: | English | 
| Foilsithe / Cruthaithe: | Washington, D.C.
          Carnegie Institution of Washington Publication
    
        1947 |