9780891418696 | Presidio Pr, November 30, 2005, cover price $7.99 | About this edition: Describes how a group of American special forces soldiers known as 'tunnel rats' wages a harrowing campaign against Viet Cong guierrillas, venturing deep inside the more than two hundred miles of secret tunnel networks that existed around Saigon and engaging the enemy in hand-to-hand combat.

9780394525761 | Random House Inc, April 1, 1985, cover price $3.98 | About this edition: Explains how the North Vietnamese used underground tunnels in conjunction with other guerrilla warfare tactics against American forces and looks at the specially trained U.

9780425089514 | Reissue edition (Berkley Pub Group, March 1, 1997), cover price $7.99 | About this edition: Recounts the discovery of a network of tunnels around Saigon and the resulting underground fighting between Viet Cong guerrillas and American special forces for control of the tunnels