TY  - RPRT
TI  - A standard of attenuation for microwave measurements 
AU  - Grantham, R E
AU  - Freeman, J J
PY  - 1948
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CRPL 9-8
DO  - 10.6028/NBS.CRPL.9-8
ER  -