BS 3224 : Section D2 : 1961 : Specification for lighting fittings for civil land aerodromes : part D. Runway lights : Section D2. Omni-directional elevated runway-lighting fiittings
- London British Standards Institution
STD1410
BS 3224 : Section D2 : 1961
STD1410
BS 3224 : Section D2 : 1961