Double cross
By: Sigmund Brouwer.
Series: Robot wars
Publisher: Tyndale House Publishers
Published: 2009
Place of publication: Carol Stream, Ill
Language: eng
ISBN-13: 9781414323107
Notes: This edition combines the contents of Mars diaries, Mission 3, Time bomb and Mars diaries, Mission 4, Hammerhead under title Double cross.

Previously published in 2 vols.