What does O/R mean in NASA?

This page is about the meanings of the acronym/abbreviation/shorthand O/R in the Governmental field in general and in the NASA terminology in particular.

Oxygen Relief

Governmental » NASA


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"O/R." Abbreviations.com. STANDS4 LLC, 2015. Web. 31 Jul 2015. <http://www.abbreviations.com/term/565013>.