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International Polar Year : joint hearing before the Committee on Commerce, Science, and Transportati

United States. Congress. Senate. Committee on Commerce, Science, and Transportation.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012. 2012

International polar year : the scientific agenda and the federal role : hearing before the Subcommit

United States. Congress. House. Committee on Science. Subcommittee on Research.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2006. 2006

Lessons and legacies of the international polar year 2007-2008

Washington, D.C. : National Academies Press, c2012. 2012