1234A Air Navigation; Vol. 1, Basic principles 1234B Air Navigation; Vol. 2, Allied subjects 1234D Air Navigation Vol. 4. Manual of navigation instruments (excluding radio and radar instruments) 1234E Air Navigation Vol. 5, Manual of radio navigation aids 1275B Navigation instruments Vol. 1 (section 1: indicators (incompl), 2: altimeters (incompl), 3: compasses (incompl), 4: drift instruments, 5: astronomical instruments, 6: plotting instruments, 7: … 1743 Vol. I: Navigation-instruments manual 3270 Sight reduction tables for navigation, volume 2; latitudes 0° - 39°, declinations 0° - 29°
