TY  - BOOK
ED  - International Commission on Radiation Units and Measurements.
TI  - Certification of standardized radioactive sources
AV  - RA1231.R2 I55 no. 12
U1  - 539.752 INT 1968 
PY  - 1968///
CY  - Washington D C
PB  - ICRU
KW  - Radiation
KW  - Radioactivity
ER  -