TY  - BOOK
AU  - Smith, Robert Allan
TI  - RADIO AIDS TO NAVIGATION
U1  - 621.384 
PY  - 1947///
CY  - N. Y.
PB  - Macmillan
KW  - Radio In Aeronautics
KW  - Radio In Navigation
KW  - Radar
N1  - The Material For This Book Was Prepared In The First Instance As A Contribution To The Ministry Of Supply (Air) War Records
ER  -