City Moves
A Usera#39;s Guide to the Way Cities Work Stephen Friedman ... Today, atomic clocks at national observatories use quartz crystal oscillators with frequencies of 2.5 megacycles per second checked by ... aquot;eight oa#39;clock sharp, aquot; theya#39;re not fooling.
| Title | : | City Moves |
| Author | : | Stephen Friedman |
| Publisher | : | McGraw-Hill Companies - 1989 |
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