https://www.abebooks.com/9780441893010/Derai-Winds-Gath-Ace-Double-0441893015/plp
Derai / The Winds of Gath (Ace Double 89301) - E. C. Tubb: 9780441893010 - AbeBooks
This 'ACE Double' contains the first two books in E. C. Tubbs long running 'Dumarest of Terra' series.
the winds of gath