What does the acronym ISDN stand for?

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The expansion of the term HTML is ____

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Full form of BCG is ____

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IRDP stands for ____

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NPC stands for ____

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NCERT stands for ____

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The full form of D.D.T is ____

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What does the acronym ISDN stand for?

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NTPC stands for ____

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LAN stands for ____

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‘EVM’ stands ____