In reply, the representative of the Director-General of Unesco, Mr. G. Bolla, thanked the Prime Minister for his welcome and expressed the profound gratitude of the participants for the kind invitation to hold the meeting in Sydney and for the generous hospitality of the Australian people. He also recalled the concern of Mr. Amadou Mahtar M'Bow, Director- General of Unesco, for the conservation of the cultural and the natural heritage and expressed the Director-General's appreciation for the active participation of Australia in all the activities of Unesco.