| Title | The Measurement of Frequency and Time Interval |
| Author | L. Essen |
| Publisher | HMSO |
| Year | 1973 |
| Reference | 5677 |
| Type of material | Text Book |
| Received | 12/01/2009 |
| LOCATION | | Signature | 525 ESS |
| Shelfmark | Astronomical Geography and Chronology (525) |
| Library | Corridor, 5th floor, SLO |
Status: Available |