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EX-32 - EX-32 - UNION PACIFIC CORP | unp-20200930xex32.htm |
EX-31.B - EX-31.B - UNION PACIFIC CORP | unp-20200930xex31_b.htm |
EX-31.A - EX-31.A - UNION PACIFIC CORP | unp-20200930xex31_a.htm |
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file | filename |
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EX-32 - EX-32 - UNION PACIFIC CORP | unp-20200930xex32.htm |
EX-31.B - EX-31.B - UNION PACIFIC CORP | unp-20200930xex31_b.htm |
EX-31.A - EX-31.A - UNION PACIFIC CORP | unp-20200930xex31_a.htm |
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