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Wikipedia: Sone River

Wikipedia: Nehru Setu

Wikipedia: Gaya–Pandit Deen Dayal Upadhyaya Junction section

Wikipedia: Barauni–Katihar section

Anchor text: Details of New line, Gauge conversion & Doubling constructed after independence & in progress on Indian Railways

Wikipedia: Katihar Junction railway station

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Wikipedia: Kutch Express

Anchor text: Longest railway bridge in Kochi

Wikipedia: Barkakana–Son Nagar line