| 其他書名 | Testimony of John V. L. Hogan, Consulting Radio Engineer, New York City, Before the Federal Radio Commission, Washington, D.C., July 23, 1928 |
| 出版 | U.S. Government Printing Office, 1928 |
| URL | http://books.google.com.hk/books?id=kadIAAAAMAAJ&hl=&source=gbs_api |