10 cfr 100 July 8, 2019 16 32 64 128 10 cfr 100.11 10 cfr 1004.11 10 cfr 1004 10 cfr 100.23 10 cfr 100 appendix a 10 cfr 100 dose limits 10 cfr 1008 10 cfr 100.21 10 cfr 1004.13 10 cfr 100.10 10 cfr 1003 10 cfr 100.20 10 cfr 1000 10 cfr part 100