TY  - GEN
ED  - British Standards Institution
TI  - BS 3224 : Section B1 : 1970 : Specification for lighting fittings for civil land aerodromes : Part B. approach lights : high intensity elevated approach lighting fittings
PY  - 1970///
CY  - London
PB  - British Standards Institution
N1  - STD1438
ER  -