What does USO stand for?
USO stands for "Unión Sindical Obrero"
How to abbreviate "Unión Sindical Obrero"?
"Unión Sindical Obrero" can be abbreviated as USO
What is the meaning of USO abbreviation?
The meaning of USO abbreviation is "Unión Sindical Obrero"
What does USO mean?
USO as abbreviation means "Unión Sindical Obrero"
