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National Geographic Magazine, January 2013:
Why We Explore
National Geographic
Primary Author
mixed material
National Geographic Society
2013
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National Geographic:
Greenland Ground Zero For Global Warming
mixed material
USA
National Geographic
2010
National_Geographic_Greenland_Ground_Zero_For_Global_Warming.jpg.jpg
National Geographic The New Science of The Teenage Brain
mixed material
Westport, Conn.
PT. Mandiri Jaya Abadi
2011
National_Geographic_The_New_Science_of_The_Teenage_Brain.jpg.jpg
Knowledge masters The Earth
Roger Coote
Additional Author
mixed material
England
Aligator Book
2006
Knowledge_masters_The_Earth.jpg.jpg
Mountains
Margaret Hyness
Additional Author
mixed material
London
Kingfisher
2007
Earth's mountains
bobbie kalman
Additional Author
mixed material
America
Crabtree Publlishing Company
2009
Agung si Gunung
nanit
Additional Author
Jodhi P. Giriarso
Additional Author
mixed material
Jakarta
Bumi Aksara Group