TY  - RPRT
TI  - Techniques for computing refraction of radio waves in the troposphere 
AU  - Dutton, E J
PY  - 1962
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 97r
DO  - 10.6028/NBS.TN.97r
ER  -