CIRCULAR LETTER TO THE PERMANENT DELEGATIONS OF STATES PARTIES TO THE WORLD HERITAGE CONVENTION Reference: Circular Letter WHC n° 1-97 Madam/Sir, Please find herewith three copies of The World Neritage Convention, twenty years later, by Professor Léon Pressouyre, which is the English translation of the French original published in I993. We would be grateful if you could forward two copies to your National Commission for UNESCO and to your national authorities in charge of the implementation of the World Heritage Convention. We thank you in advance for your kind cooperation. Please accept, Madam/Sir, the assurances of our highest consideration. Bernd von Droste Director World Heritage Centre