System requirements: Adobe Acrobat Reader. Mode of access: Internet from the USGS web site. Address as of 11/2/02: http://geopubs.wr.usgs.gov/openfile/of02-283
Title from HTML index page (viewed on Aug. 22, 2002). "Prepared for National Aeronautics and Space Administraion." Consists of 2 polar maps, slightly overlapped with one mid-latitude map, covering entire planet.