TY  - BOOK
TI  - Research needs for radiation protection
T2  - Report, no.<117>
SN  - 0929600320
SN  - 0083209X
PY  - 1993///
CY  - Bethesda, Md.
PB  - NCRP
N1  - Recommendations of the NCRP; Bibliografía: p.55-60
ER  -