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Filing metadata

Accession number: 0001127602-11-031821
Form type: Form 4
Filer: MDU RESOURCES GROUP INC
CIK: CIK 67716
Filed: Dec 12, 2011
Reporting period: Dec 09, 2011
Description: Insider transaction

Documents

0001127602-11-031821-index.htm

Complete submission

0001127602-11-031821.txt

directory listing

Filed by

MDU RESOURCES GROUP INC