Poleward shifts in winter ranges of North American birds
Ecology (Durham), 2007-07, Vol.88 (7), p.1803-1812 [Peer Reviewed Journal]Copyright 2007 Ecological Society of America ;2007 by the Ecological Society of America ;2007 INIST-CNRS ;Copyright Ecological Society of America Jul 2007 ;ISSN: 0012-9658 ;EISSN: 1939-9170 ;DOI: 10.1890/06-1072.1 ;PMID: 17645026 ;CODEN: ECGYAQ
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