4) ENV1993-1-3 ዩሮ ኮድ 3 ማለት: ብረት መዋቅሮች ንድፍ; ክፍል 1.
4) ENV1993-1-3 kuthetha Euro ikhowudi 3: Uyilo kwezitraksha yentsimbi; Icandelo 1.3: Imigaqo ngokubanzi, imithetho zokuXabangela kumalungu gauge obhityileyo abandayo-abembumbile.