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Opera Serias -- See Operas
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1
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Opera Society Of Washington -- See also Washington Opera (Washington, D.C.)
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1
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Opera Stories -- See Operas Stories, plots, etc --subdivision Stories, plots, etc. under names of individual composers
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1
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Opera Stories Plots Etc -- See Operas Stories, plots, etc --subdivision Stories, plots, etc. under names of individual composers
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1
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Opera Television Adaptations -- See Operas Television adaptations
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1
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Opera Vigilanza Repressione Antifascista Italy -- See Ovra (Organization : Italy)
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1
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Operacao Condor South American Countersubversion Association -- See Operación Cóndor (South American countersubversion association)
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1
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Operacion Mongoose -- See Operation Mongoose
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1
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Operacion Pedro Pan -- See Operation Pedro Pan
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1
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Operacion Peter Pan -- See Operation Pedro Pan
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1
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Operacion Vikingo U S -- See Viking Mars Program (U.S.)
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