|
|
|
|
1
|
|
Operassion (Musical group), / instrumentalist
|
2009
|
1
|
|
Operating Room Nurses' Association of Canada
|
2012-
|
1
|
|
Operating Room Nurses of Canada
|
2011
|
1
|
|
Operation Blazing Sword
|
2021
|
1
|
|
Operation Lifeline (Toronto, Ont.)
|
1981
|
1
|
|
|
|
1
|
|
|
|
1
|
|
Operational and Law Enforcement Workforce Resiliency (Workshop) (2011 : Washington, D.C.) / http://id.loc.gov/authorities/names/n2014187209
|
2012
|
1
|
|
|
|
1
|
|
Operational Research Club (Great Britain)
|
1952
|
1
|
|
Operational Research Society (Great Britain)
|
|
8
|
|
Operational Research Society of India
|
|
2
|
|
Operational Research Society of India. Conference (54th),
|
2023
|
1
|
|
Operational Research Society of New Zealand
|
1984-
|
1
|
|
Operational Research Society of Singapore
|
1984-
|
1
|
|
Operations and Policy Research, Inc. / http://id.loc.gov/authorities/names/n50003484
|
|
1
|
|
Operations and Project Management: Strategies and Trends (Conference) (2021 : Rostov-na-Donu, Russia ; Online)
|
2022
|
1
|
|
Operations, Committee on Alternatives for Inspection of Outer Continental Shelf
|
1900
|
1
|
|
OPERATIONS, FUTURE OF PEACE
|
|
1
|
|
Operations Research Incorporated. / http://id.loc.gov/authorities/names/n81128352
|
|
1
|
|
Operations Research Society of America
|
|
10
|
|
Operations Research Society of America. Military Applications Section
|
|
1
|
|
Operations Research Society of America. Transportation Science Section
|
1967-
|
1
|
|
|
|
1
|
|
|
|
1
|
|
Operations Research Society of South Africa
|
|
1
|
|
|
|
1
|
|
Operative Bakers' Union,
|
|
2
|
|
|
|
1
|
|
OPERcussion (Musical group), / performer
|
2022
|
1
|
|
Operdelennov, Evgeny, / singer
|
2006
|
1
|
|
|
|
1
|
|
Operetní studiový orchestr,
|
|
2
|
|
Opernchor Aachen,
|
|
2
|
|
Opernchor Chemnitz, / singer
|
2000
|
1
|
|
Opernchor der Musikhochschule Köln, / performer. http://id.loc.gov/authorities/names/no2001060376
|
2010
|
1
|
|
|
|
1
|
|
Opernchor Saarbrücken,
|
|
2
|
|
Opernhaus Halle. / http://id.loc.gov/authorities/names/n97070244
|
2005
|
1
|
|
|
|
1
|
|
Opernhaus Zürich,
|
|
5
|
|
Opernhaus Zürich. Chor.
|
|
4
|
|
Opernhaus Zürich. Kinderchor, / performer
|
2013
|
1
|
|
Opernhaus Zürich. Mozart-Orchester.
|
|
2
|
|
Opernhaus Zürich. Orchester.
|
|
4
|
|
|
|
1
|
|
Operstein, Natalie
|
|
4
|
|
|
|
1
|
|
Opery Śląskiej. Chór, / singer
|
2023
|
1
|
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