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9 ಸೀಸನ್
158 ಸಂಚಿಕೆ
MegaStructures - Season 2 Episode 20
Examining construction of North American Aerospace Defense Command (NORAD) in the Colorado mountains. Including the technical challenges it presented.
- წელი: 2012
- ದೇಶ: United States of America
- ಪ್ರಕಾರ: Documentary
- ಸ್ಟುಡಿಯೋ: National Geographic
- ಕೀವರ್ಡ್:
- ನಿರ್ದೇಶಕ:
- ಪಾತ್ರವರ್ಗ: