Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 311 is...

311 is

  • Reserved Special Function

311 is also in:

Acronym Definition Searched: DNCA 49825 LG SAR RPT WAMT GEOSECS SCI 93915 UNEP 38058 DSI GHSWT 27923 RFGI