Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 20S is...

20S is

  • Boneville Dam United States Army Corps of Engineers Weather Observation Station, Bonneville, Oregon USA

20S is also in:

Acronym Definition Searched: RAE PAF 39346 PS 21040 HDP SAIF MIF JFRPG SOP EOTC 66109 BT 98259 PIP