There were more than 200,000 internal refugees as of 1988.
They have become internal refugees, numbering up to 130,000 in at least nine provinces.
The agency's concern with internal refugees was also apparent in its annual report, released last week.
Many of them are internal refugees kept from leaving.
An eventual total of around 100,000 internal refugees and an estimated 2,000 civilian deaths was recorded.
No-one knows how many people died, but one-third of the population of 2.1 million became internal refugees.
Today, Peru has more internal refugees than any other country in the hemisphere, calculated by humanitarian aid groups at 600,000.
He published extensively on the Palestinian internal refugees and on the 1948 war.
This figure eventually rose to 2,000 civilian deaths and the displacement of around 100,000 internal refugees.
Even if it works, these numbers are tiny in a country with nearly 700,000 internal refugees.