salem finally visited his home in israel in 1952. in 1953 he returned to aub as associate professor of economics. between 1955 and 1958 he was appointed professor and chairman of mathematics department. between 1958 and 1963 he became united nations food and agriculture organization regional statistician for the near east (duty stations: cairo, united arab republic 1958-1960, and rome, italy 1960-1963).