Marian Ackerman Wasson, 54, who was involved in property management in the Washington area, died July 5 in Fort Lauderdale, Fla. She had suffered from cancer.

Mrs. Wasson was born in Washington. She attended the Washington School for Secretaries. From about 1945 to 1948, she was a petty officer in the WAVES, working at the Navy's Bureau of Supplies and Accounts.

During the next three years, she lived in Germany, where she married her first husband, D.C., Harper. They returned to Washington, where both worked for Mrs. Wasson's father, the late Leon Ackerman, a land and property developer.

Mrs. Wasson managed several large apartment houses for her father. She moved to Florida about 10 years ago. Her first marriage had ended in divorce and she married her second husband, Percy L. Wasson, a retired hotel owner, there.

In 1967, Mrs. Wasson founded the National Society for Parents of Flower Children. It helped set up clinics to provide counseling and medical care for young people, many of whom had left home.

In addition to her husband, she is survived by a daughter, Sheran A. Harper, of Reston; two sisters, Margaret Young, of Washington, and Dorothy Gordon, of Pleasanton, Calif., and a brother, Fred Ackerman, of Silver Spring.