Radio ; a study of first principles for schools, evening classes and home study /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
New York :
D. Van Nostrand,
[1938]
|
| Edition: | 3d ed. |
| Subjects: |
| Physical Description: | xvi, 293 pages : illustrations ; 21 cm. |
|---|