其他書名 | Recommendations and Reports of the CCIR, 1986 (also Questions, Study Programmes, Resolutions, Opinions and Decisions). - 7: Standard Frequencies and Time Signals |
出版 | CCIR, 1986 |
ISBN | 926102761X9789261027612 |
URL | http://books.google.com.hk/books?id=hkOgAAAACAAJ&hl=&source=gbs_api |