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Subject
- Great Trigonometrical Survey of India[remove]2
- Himalaya Mountains—Discovery and exploration—Maps2
- Himalaya Mountains—Maps[remove]2
- Physical geography—Himalaya Mountains—Maps[remove]2
- Tibet Autonomous Region (China)—Maps2
- Brahmaputra River—Discovery and exploration—Maps1
- India, Northeastern—Maps1
- Kathmandu (Nepal)—Maps1
- Nepal—Maps1
- Surveying1
- Tibet—Discovery and exploration—Maps1
- Triangulation1