MDU RESOURCES GROUP INC

400 N FOURTH ST, BISMARCK ND 58501, 7012227900
GAS & OTHER SERVICES COMBINED

1997 SEC Filings

MDU RESOURCES GROUP INC, 10-Q, 1997-11-12
MDU RESOURCES GROUP INC, 424B3, 1997-09-26
MDU RESOURCES GROUP INC, 424B5, 1997-09-15
MDU RESOURCES GROUP INC, 8-K, 1997-09-09
MDU RESOURCES GROUP INC, 10-Q, 1997-08-12
MDU RESOURCES GROUP INC, 8-K, 1997-07-14
MDU RESOURCES GROUP INC, S-8, 1997-05-28
MDU RESOURCES GROUP INC, 10-Q, 1997-05-15
MDU RESOURCES GROUP INC, 11-K, 1997-03-28
MDU RESOURCES GROUP INC, DEF 14A, 1997-02-28
MDU RESOURCES GROUP INC, 10-K, 1997-02-28


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