1 نتائج 'building operations'
Building operations
Construction engineering
Building maintenance, Prefabrication (buildings), Reconstruction (buildings)
Buildings, Carpentry
Politics, law and economics
> Civil, military and mining engineering
Operación de construcción (es), Строительные операции (ru), عمليات البناء (ar), Opération de construction (fr)
http://vocabularies.unesco.org/thesaurus/concept4417