Dan Valentine, 73, whose column, "Nothing Serious," was published for more than 30 years in the Salt Lake Tribune and the Salt Lake Telegram, died Feb. 12, 1991, at the home of a son, Dan Valentine Jr., in Arlington, Va.

The humor columnist retired in 1980 after a severe fall. Head injuries caused his physical health to deteriorate.Private funeral services will be held Saturday at Arlington National Cemetery.

Mr. Valentine, who was born in Saginaw, Mich., attended the University of Chicago, leaving school to join the Army during World War II. He served with Armed Forces Radio and fought with the infantry in the battle of Guadalcanal.

He also worked two years as sports editor and daily columnist for the South Pacific Daily News, a U.S. Navy publication. After military service he was editor of the Rapid City (South Dakota) Journal and worked for a number of small midwestern newspapers before moving to Utah in 1948 to work for the Associated Press, the Telegram and later the Tribune.

Mr. Valentine left Utah to work for the San Francisco Examiner and later to live for a short time in Palm Springs, Calif., and in London, England.

Probably his best-known columns were"Dear World," in which he expressed his hopes and fears for his young son, Dan Jr., as he was about to start school; and "I Trust You'll Treat Her Well," about his daughter.

Mr. Valentine's material had been featured on the Johnny Carson show and other television programs hosted by Tennessee Ernie Ford, Garry Moore and Art Linkletter. The columnist was known for his ability to raise funds for the Utah State Training School and had been honored by the school and in 1985 at a State Capitol reception.

In one interview he told a reporter that his fall in 1980 resulted when he was distracted by a "good-looking blonde." The columnist had been accused by some of being chauvinistic in his writing. But his son said Thursday that when his father was asked about equal rights for women, Mr. Valentine once said, "I don't know why women would want to give up complete superiority for mere equality."