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2007-02-05 ವೇಬ್ಯಾಕ್ ಮೆಷಿನ್ ನಲ್ಲಿ. Scientific Facts on Arctic Climate Change PolarTREC PolarTREC-Teachers and Researchers Exploring and Collaborating Arctic Change:
ಕಣ್ಣು (ಪ್ರಚಂಡಮಾರುತ)
ಮೆಟೀರಿಯಾಲಜಿಕಲ್ ಸೊಸೈಟಿ ಮರಳಿ ಪಡೆದಿದ್ದು ೨೦೦೮-೦೨-೧೦. National Snow and Ice Data Center. "Polar Lows". Archived from the original on 2013-02-04. Retrieved 2007-01-24. Maue
ಯೂಟ್ಯೂಬ್ ವಿಡಿಯೋ Buskey, Theresa. "The Antarctic Polar Region". In Alan Christopherson, M.S. (ed.). The Polar Regions. LIFEPAC (in English). 804 N. 2nd Ave
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Grebel (2006). "The Anisotropic Distribution of M 31 Satellite Galaxies: A Polar Great Plane of Early-Type Companions". Astronomical Journal. 131 (3): 1405–1415
Neftel, A., E. Moor, H. Oeschger, and B. Stauffer (1985). "Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries"