The Teachers' International Trade Secretariat or International Trade Secretariat of Teachers (ITST) was a global union federation bringing together unions representing schoolteachers.
The Teachers' International Trade Secretariat or International Trade Secretariat of Teachers (ITST) was a global union federation bringing together unions representing schoolteachers. (en)
The Teachers' International Trade Secretariat or International Trade Secretariat of Teachers (ITST) was a global union federation bringing together unions representing schoolteachers. (en)