* Herbert Salzman; International Economist

Herbert Salzman, 74, an international economist who worked under four presidents. President Lyndon B. Johnson appointed him assistant administrator for the Agency for International Development in 1966. Under presidents Richard M. Nixon and Gerald R. Ford, Salzman was executive vice president of the Overseas Private Investment Corp., a quasi-public body that offered American money to developing nations. Under President Jimmy Carter, he served as U.S. representative to the Organization for Economic Cooperation and Development. In New York City on Sunday of leukemia.