Consolidated Guidance About Materials Licenses, Volume 12 by United States Nuclear Regulatory Commission (source code)

= Consolidated Guidance About Materials Licenses, Volume 12 by United States Nuclear Regulatory Commission
{c}
{tag=Work by United States Nuclear Regulatory Commission}
{title2=NUREG-1556, Volume 12}

https://scp.nrc.gov/impeptoolbox/NUREG-1556_Volume_12%2C_MandD_Licenses.pdf

Appendix I, printed page I-2, distinguishes low-atomic-number beta shielding from an outer layer used to reduce secondary <bremsstrahlung>.