Ionospheric research at Huancayo Observatory, Peru, January, 1938-June, 1946.
| निगमित लेखक: | |
|---|---|
| स्वरूप: | पुस्तक | 
| भाषा: | English | 
| प्रकाशित: | Washington, D.C.
          Carnegie Institution of Washington Publication
    
        1947 | 
| निगमित लेखक: | |
|---|---|
| स्वरूप: | पुस्तक | 
| भाषा: | English | 
| प्रकाशित: | Washington, D.C.
          Carnegie Institution of Washington Publication
    
        1947 |