Dear All I have been trying to find O and H isotopic composition of precipitation from the Quebec City Region (Quebec Province, Canada) for the last 10 years. Does anybody has references or useful addresses about it. Sincerely yours Frederic Vitali Geological Survey of Canada Centre Geoscientifique de quebec 2700 rue Einstein, CP7500 Sainte Foy, Quebec G1V 4C7 Canada Fax 418 654 2625