Franklin P. Hall, 72, a retired economist with the Department of the Interior and a former college professor, died Monday at his Silver Spring home after a heart attack.

Dr. Hall joined Interior in 1964 and worked for a short time for the bureau of land management before transferring to the bureau of mines where he specialized in the field of natural gas and oil economics. He retired in 1973.

He first worked for the federal government during World War II as a statistician for the Department of Agriculture. From 1955 until 1962, he was a chief economic adviser and then an economist with the old Federal Power Commission.

During his career as an economics professor, Dr. Hall taught at Franklin College of Indiana, Miami University in Ohio and Clark University in Worcester, Mass.

During the early 1950s, he worked for the Federal Reserve Bank in Boston.

He was born in Grand Rapids, Mich., and grew up there and in Eugene, Ore. He graduated from the University of Oregon in 1929 and earned a master's degree and a doctorate in economics from the University of Wisconsin.

He was a member of the American Economics Association, the American Civil Liberties Union and the American Association of University Professors.

Dr. Hall lived in Silver Spring and was a member of the Unitarian Universalist Church there.

Survivors include his wife, the former Elizabeth Day of Silver Spring; a daughter, Eugenie Wormser of Chevy Chase and a grandson.

The family suggests that expressions of sympathy be in the form of contributions to the Franklin P. Hall Memorial Fund at the Unitarian Universalist Church.