Maharashtra State BoardSSC (English Medium) 9th Standard
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Technological Progress

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Topics

description

  • Telex service
  • Satellite Communication Centre
  • Pincode
  • International Subscriber Dialling Telephone Service (ISD)
  • Mobile
  • Bharat Sanchar Nigam Limited (BSNL)
  • Oil and Natural Gas Commission (ONGC)
  • Railways and Technology
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