NICOSIA, Cyprus (AP) _ Reconstruction of 54 war-damaged cities has been completed 13 months after the guns fell silent in the Persian Gulf conflict, Iran's Islamic Republic News Agency reported Monday.

Work on 11 cities, including the major centers of Abadan, a huge oil- refining complex, and Khorramshahr, Iran's major port before the outbreak of the war in 1979, will be completed within two years, the agency added.

The agency, monitored in Nicosia, quoted Hamid Mirzadeh, the vice president for executive affairs, as saying 77,927 urban and rural houses and business premises damaged in the eight-year war were rebuilt or repaired this year. Work on 50,000 more will be completed by the end of the year, he added.

Reconstruction started soon after a United Nations-sponsored cease-fire took effect in August 1988. Final costs are estimated at $400 billion.

Foreign correspondents who visited Iran's western border provinces a few months after the cease-fire, where many cities were flattened or heavily damaged, reported the entire region looked like a construction project.

An estimated 1 million Iranians were displaced during the war. Many of them started returning to their cities as soon as the fighting ceased to join in the reconstruction.