What does OSO stand for?
OSO stands for "Oposición Sindical Obrera"
How to abbreviate "Oposición Sindical Obrera"?
"Oposición Sindical Obrera" can be abbreviated as OSO
What is the meaning of OSO abbreviation?
The meaning of OSO abbreviation is "Oposición Sindical Obrera"
What does OSO mean?
OSO as abbreviation means "Oposición Sindical Obrera"
