Genevieve D. Collins Linebarger, 58, a linguist and political scientist who specialized in Southeast Asian affairs, died of respiratory failure Wednesday at her home in Washington.

She was married to Paul M.A. Linebarger, a professor of Asian studies at the Johns Hopkins University School of Advanced International Studies (SAIS). She and her husband, who died in 1966, traveled in Asia and Africa gathering material for a book they wrote, "Confrontation and World Peace."

Dr. Linebarger taught Indonesian and Malayan languages at SAIS, where she had earned a master's degree. She later earned a doctorate in political science at the University of Maryland. In the 1950s and 1960s, she was a researcher and professor at Johns Hopkins, the universities of Pennsylvania and Maryland, Trinity College and at Australian National University in Canberra.

She was a former editor of "Free World Forum."

Dr. Linebarger also wrote science fiction under the name of Cordwainer Smith, a pseudonym her husband had used in writing his own fictional works.

She was born in Carlsbad, N.M., and was a graduate of Duke University. She had lived in Washington since 1947.

Survivors include two stepdaughters, Marcia Linebarger of Philadelphia, and Rosanna Hart of Portland, Ore., and a brother, I.T. Collins of Kingsport, Tenn.