TY  - BOOK
TI  - Specification of gammaray brachytherapy sources
T2  - Report, no.<41>
SN  - 0913392235
SN  - 0083209X
PY  - 1974///
CY  - Bethesda
PB  - NCRP
N1  - Recommendations of the NCRP; ApÃ©ndices y bibliografÃ­a: p.8-11
ER  -