Invasion from 2500 explained

Invasion from 2500 is a science fiction novel by American writers Ted White and Terry Carr in 1964 under the pseudonym Norman Edwards. It was published by Monarch Books in August 1964.[1] [2]

Notes

  1. https://www.goodreads.com/book/show/7248648-invasion-from-2500 Invasion from 2500
  2. Robert Reginald, Douglas Menville - Contemporary Science Fiction Authors, Arno Press, 1974. pp. 332