<div class="description">
<p>Journal of Research of the National Bureau of Standards
</p>
<br>Subjects: camera; intermittent action; calibration; absolute time</div>
<div class="fn value">
<dl><dd>Hefley, G.</dd>
<dd>Doherty, R.H.</dd>
<dd>Berger, E.L.</dd></dl></div>
Internet Archive identifier