Fotagrafa 1: Frederic BESSBOROUGH (Earl of) presiding plenary in May 1973.
Fotagrafa 2: Lucien HARMEGNIES in plenary in May 1973.
Fotagrafa 3: Maurits DEWULF presiding plenary in May 1973.
Fotagrafa 4: Maurits DEWULF presiding plenary in May 1973.