IGU definitions

Igu

(from the article `Dibng Valley`) ...in the Dibng Valley region is largely undeveloped. Most distances are traveled over simple tracks, though there are a few all-weather roads. Anini ...
Found on http://www.britannica.com/eb/a-z/i/7

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igu

i give up
Found on http://www.noslang.com/dictionary/i/

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IGU

acronym: International Geographical Union (ICSU)
Found on https://www.encyclo.co.uk/local/20002

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