Since then, every even year, the Society has convened a world congress.

It's not enough to go to the World Congress yet.

Starting in 1950 and 1952, world congresses have since been taking place every three years.

Another meeting at the 1904 world congress in Amsterdam did take place, but without lasting consequences.

The world congress agreed that the sections should execute a turn to industry.

All five government leaders met regularly in the World Congress.

Delegates from 35 member countries participate in the World Congress every few years.

The first true World Congress was held in 1950.

Approved candidates are installed on an international level at a World Congress.

They appeal to the World Congress about the situation, but are ejected.