<div class="description">
Subjects: Radiation -- Safety measures -- Standards.; Gamma rays -- Safety measures -- Standards.</div>
<div class="fn value">
American National Standards Institute. Subcommittee N43-3.4</div>
<dl><dd><a rel="nofollow" class="external free" href="https://archive.org/details/americannational127amer">https://archive.org/details/americannational127amer</a></dd>
<dd><a rel="nofollow" class="external free" href="https://archive.org/download/americannational127amer/americannational127amer.pdf">https://archive.org/download/americannational127amer/americannational127amer.pdf</a></dd></dl>