Maria M. Ivusic, who was a teacher, translator and interpreter of Russian and Serbo-Croatian languages for government agencies and private companies, died June 4 at her home in Washington. She was 76.

The cause was cancer, said her husband, Christopher W. Ivusic.

Mrs. Ivusic taught language classes for diplomats and CIA officers and at private language schools. She also served as an interpreter for Russian engineers in the U.S. space program and worked as a tour guide for 26 years. She retired in 1999.

Maria Nikolaevna Mihajlov was born in Nis, Yugoslavia (now Serbia), to a family of Russian immigrants. She completed her studies at the University of Sarajevo before coming to the United States in 1965. She received her diploma in 1966.

She was the sister of Mihajlo Mihajlov, a dissident writer in the former Yugoslavia who died in 2010. She translated two of his books into English.

Mrs. Ivusic received a master’s degree in Russian language and literature from American University in 1972. She became a U.S. citizen that year.

In 1968, she married Christopher W. Ivusic. They separated in 1975, divorced in 1978 and were remarried in 1996.

In addition to her husband, of Washington, survivors include a son, Sean Ivusic of Point of Rocks, Md.

— Bart Barnes