PHILADELPHIA (AP) _ Irving Bernard Kravis, former chairman of the economics department at the University of Pennsylvania, has died.

Kravis, 75, of Haverford, died Friday at Methodist Hospital. The cause of death was not released. A memorial service was held Sunday. Burial was in Mount Sharon Cemetery in Springfield, Delaware County.

Kravis was best known for his pioneering work in international price comparisons. He was economics department chairman at Penn from 1955 to 1958 and from 1962 to 1967, and was associate dean of the Wharton School of Finance and Commerce from 1958 to 1960. He retired as professor emeritus in 1987.

He received a bachelor of science degree from Penn in 1938 and his doctorate in 1947, joining the faculty two years later. He served as president of the faculty senate for several years.

Kravis attained a worldwide reputation for his price-comparisons methods while working under the co-sponsorship of the United Nations and the World Bank. He also was a consultant for the Organization for European Common Development and various U.S. government agencies.

He was honored with a Ford Foundation fellowship in 1960 and a Guggenheim Memorial Foundation fellowship grant in 1967.

Survivors include his wife, Dr. Lillian Kravis; two sons, Dr. Robert and Dr. Nathan; two daughters, Dr. Ellen Hamberger and Marcia; six grandchildren and a sister.