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The meaning of the Acronym ORR is...
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Regional
Railroads
ORR
ORR is
Osage Railroad
More Meanings For ORR:
Oxidation- Reduction Reaction
Operational Readiness Review
Operations Requirements Review
Office of Refugee Resettlement
Oriental Rug Review
Yorketown, South Australia, Australia
Osage Railroad
ORR is also in:
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