SaharaMass Market Paperbound, 1 March 1995

A deadly toxic compound in the middle of the African desert is killing
thousands of people and threatening to extinguish marine life in the
world's seas. As Dirk Pitt crosses the Sahara to uncover an unholy
conspiracy, he discovers the truth about Kitty Mannock, an Australian
pilot missing since 1931, and an incredible secret held in a
Confederate ironclad...An explosive, high-voltage audio experience,
Sahara takes Dirk Pitt on his most dangerous journey.