| 1. Calcutta Telephones
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| Details of BSNL telephone services in the metro area, including directory search, and customer services. |
| http://www.calcutta.bsnl.co.in |
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| 2. Calcutta Web
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| A guide to the city of Calcutta and the nearby urban areas. |
| http://www.calcuttaweb.com |
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| 3. Kolkata Beckons
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| Guides, history, business and utility listings, maps and statistics. |
| http://www.kolkatabeckons.com |
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| 5. Metro Railway, Kolkata
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| Official site. Includes rail maps, fares, history, operations, future projects. |
| http://www.kolmetro.com |
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