TY  - BOOK
TI  - Medical Xray, electron beam and gammaray protection for energies up to 50 MeV : [equipment design, performance and use]
T2  - Report, no.<102>
SN  - 0929600037
SN  - 0083209X
PY  - 1989///
CY  - Bethesda, Md.
PB  - NCRP
N1  - Recommendations of the NCRP; Apéndices y bibliografía: p.85-117
ER  -