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file | filename |
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EX-32 - EX-32 - NORTHERN STATES POWER CO | nspmex3201q22021.htm |
EX-31 - EX-31 - NORTHERN STATES POWER CO | nspmex3102q22021.htm |
EX-31 - EX-31 - NORTHERN STATES POWER CO | nspmex3101q22021.htm |
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file | filename |
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EX-32 - EX-32 - NORTHERN STATES POWER CO | nspmex3201q22021.htm |
EX-31 - EX-31 - NORTHERN STATES POWER CO | nspmex3102q22021.htm |
EX-31 - EX-31 - NORTHERN STATES POWER CO | nspmex3101q22021.htm |
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