I was going to type this one out for you, Murray, but then I found out it's in the database. Just put the word Hiroshima in the box in the upper right corner of this page, and the song should come right to you.
The original poem was written in Turkish by Nazim Hikmet, translated into English by Jeanette Turner. Music is from "The Great silkie," by James Waters, adapted by Pete Seeger in 1962. In his book "Where Have All the Flowers Gone," Seeger lists the title as "I Come and Stand at Every Door (Girl of Hiroshima)."
Powerful song, isn't it?
-Joe Offer-