TY  - RPRT
TI  - Calibration of five gamma-emitting nuclides for emission rate 
AU  - Hutchinson, J M R
PY  - 1960
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 71
DO  - 10.6028/NBS.TN.71
ER  -