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Subject
- Great Trigonometrical Survey of India2
- Himalaya Mountains—Maps[remove]2
- Nepal—Maps2
- Surveying2
- Tibet Autonomous Region (China)—Maps[remove]2
- Brahmaputra River—Discovery and exploration—Maps1
- Explorers—India1
- Himalaya Mountains—Discovery and exploration1
- Himalaya Mountains—Discovery and exploration—Maps1
- Kathmandu (Nepal)—Maps1
- Physical geography—Himalaya Mountains—Maps1
- Sikkim (India)—Maps1
- Triangulation1