Attached files
file | filename |
---|---|
EX-32.01 - EXHIBIT 32.01 - NORTHERN STATES POWER CO | nspmex3201q12020.htm |
EX-31.02 - EXHIBIT 31.02 - NORTHERN STATES POWER CO | nspmex3102q12020.htm |
EX-31.01 - EXHIBIT 31.01 - NORTHERN STATES POWER CO | nspmex3101q12020.htm |
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