Changing arctic ecosystems
Subtitle: polar bear and walrus response to the rapid decline in arctic sea ice
By: authors, K. Oakley [and five others]
Contributors: Geological Survey (U.S.)
Series: Fact sheet -- 2012-3131; Fact sheet (Geological Survey (U.S.)) -- 2012-3131
Publisher: U.S. Department of the Interior, U.S. Geological Survey
Published: 2012
Place of publication: Reston, Virginia]
Language: eng
Subjects: Polar bear; Effect of global warming on; Walrus; Sea ice
Notes: Title from title screen (viewed on Feb. 26, 2013).

"November 2012."