TY  - RPRT
TI  - A method for designing multi-screw waveguide tuners 
AU  - Weidman, M P
PY  - 1970
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 393
DO  - 10.6028/NBS.TN.393
ER  -