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Date: 2016-08-19 05:26:13 | FIFTY YEARS OF THE UISAuthor:José Ayrton Labegalini (Brazil), electrical and civil engineer, speleologist and past President of the International Union of Speleology. Description: Until this book was publisAdd to Reading ListSource URL: www.uis-speleo.orgDownload Document from Source WebsiteFile Size: 47,69 KBShare Document on Facebook |