The Ancient Engineers - Missing

by ال. اسپراگ دی کمپ

Blurb

The Ancient Engineers is a 1963 science book by L. Sprague de Camp, one of his most popular works. It was first published by Doubleday and has been reprinted numerous times by other publishers. Translations into German and Polish have also appeared. Portions of the work had previously appeared as articles in the magazines Fate, Isis and Science Digest.