|Edition: || UK (paperback)|
|When: ||June 1980|
|New: ||CDN$ 12.93|
|Used: ||CDN$ 0.01|
Note: At least two printings of this paperback sported two different ISBNs - the one above on the back cover but 0-426-20103-5 on the inside copyright page. Neither ISBN belongs to another book, so it is impossible to tell which is the "right" one.
Some time ago, the White Guardian, one of the most powerful beings in the Cosmos, had set the Doctor an urgent task — to find and reassemble the six segments of the Key to Time.
The Doctor and Romana had successfully retrieved five of the segments and now they have reached the planet Atrios in the middle of an atomic war, to search for the last, most vital piece.
Sinister dangers await them in this final stage of their quest...
THE ARMAGEDDON FACTOR is a novel in the Key To Time Sequence. Also available THE RIBOS OPERATION, THE STONES OF BLOOD, THE ANDROIDS OF TARA and THE POWER OF KROLL.