1. T︠S︡irkumpoli︠a︡rnai︠a︡ karta chetvertichnykh otlozheniĭ Arktiki = Circumpolar map of Quaternary deposits of the Arctic = Carte circumpolarire des dépôts quaternaires de l'Arctique Yale Public content 1991. 2007-03-20T13:56:56Z. 2013-03-18T23:17:28Z. Geological Survey of Canada. Russian&English&French. Public. Arctic regions. Quaternary.