Clarence N. Dufek, 68, a retired official with the Distilled Spirits Council of the United States (DISCUS) and an area resident since 1974, died of cancer Friday at his Arlington home.

In 1944, Mr. Dufek joined the Licensed Beverage Industries and Allied Liquor Industries as a field representative. His home base was in Minnesota.

During the 1950s and early 1960s, he was western division director and, later, director of public activities for the Licensed Beverage Industries. He became administrative assistant to the president on LBI after it merged with DISCUS. He retired in 1974.

Mr Dufek also wrote a column, "Let's Talk," for liquor industry trade publications for 12 years.

Before beginning his career with LBI he worked as an advertising manager for newspapers in Wisconsin and Minnesota.

Mr. Dufek was born in Mainitowoc, Wis.

He was a life member of the National Licensed Beverage Association, and a member of the Naitonal Newspaper Association, the American Association of Retired Persons and an honorary member of Knights of Columbus Council 3759.

Survivors include his wife, Hortense, of the home in Arlington; nine sons, Donald, of Cincinnati, Robert of Capentersville, Ill., James, of Apple Valley, Minn., John, of Seminole, Fla., Paul, and Richard, both of Alexandria, William, of Unionville, N.Y., Dennis, of Rochester, N.Y., and Thomas, of West Babylon, N.Y.; six daughters, Ellen Pekarna, and Anne Beckman, both of Jordan, Minn., Jean Ferber, of Lakeville, Minn., Mary Loop, of West Babylon, N.Y. Donna Cusack, of Farmingdale, N.Y., and Barbara Goodman, of Westminister, Colo., 42 grandchildren and one great grandchild. CAPTION: Picture, CLARENCE N. DUFEK, 1969 Photo