SIRIM, 9. Tungsten filament electric lamp for general service.
Lua i Stíl Chicago (17ú heag.)SIRIM, 982. Tungsten Filament Electric Lamp for General Service.
Lua MLA (9ú heag.)SIRIM, 982. Tungsten Filament Electric Lamp for General Service.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.