TY  - RPRT
TI  - Disclosures on viscous damped wind vane, nonskid road or runway, regrooved pneumatic tire with removable inserts, devide for radially positioning a rotating wheel, method for fabricating precision waveguide sections, distortion-cancelling loudspeaker sys 
AU  - Robbins, David
PY  - 1970
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 536
DO  - 10.6028/NBS.TN.536
ER  -