Opera Nazionale Balilla | Opera Nazionale Balilla |
Opera Nazionale Dopolavoro | Œuvre nationale du temps libre |
Opera seria | Opera seria |
Opera Software | Opera Software |
operable | faisable |
Operación Puerto doping case | Affaire Puerto |
Operación Triunfo | Operación Triunfo |
Operant conditioning chamber | Boîte de Skinner |
operate | exploiter |
operatic | d'opéra |
operating data | données d'exploitation |
operating expenses | frais d'exploitation |