http://www.ngdc.noaa.gov/ngdc.htmlResurse educationale
http://www.ngdc.noaa.gov/education/education.html
Imagini si animatii
http://www.ngdc.noaa.gov/mgg/image/globalimages.html
01.01.2009
National Geophysical Data Center
http://www.ngdc.noaa.gov/ngdc.htmlResurse educationale
http://www.ngdc.noaa.gov/education/education.html
Imagini si animatii
http://www.ngdc.noaa.gov/mgg/image/globalimages.html
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