Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleS pring M igration on L ake O rok- nor.PublicationIbis, 1932, Vol 74, Issue 2, p339ISSN0019-1019Publication typeArticleDOI10.1111/j.1474-919X.1932.tb07630.x