VII.31 The Bureau at its twenty-first extraordinary session examined reports on the state of conservation of fifty-one properties inscribed on the World Heritage List (nineteen natural, three mixed and twenty-nine cultural). The Committee examined twenty-one of them (nine natural, one mixed and eleven cultural properties) and noted the decisions of the twentyfirst extraordinary session of the Bureau on the remaining properties as reflected in working documents WHC-97/CONF.208/4B (Report of the Bureau) and WHC-97/CONF.208/8B.Rev.