Les congress internationaux de 1681 a 1899 liste complete. International congress, 1681 to 1899, full list 

 - Bruxelles  Union of International Associations  1960 
 - 76p.  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Congresses and conventions
<br/><br/><label>LC Class. No.: </label>PAM AS5.U5 No.8