Ace Double : Nebula Alert / The Rival Rigelians

NEBULA ALERT (A. Bertram Chandler)/THE RIVAL RIGELIANS (Mack Reynolds) 1967 Ace

Ace Double. Nebula Alert A Bertram Chandler. Rival Rigelians Mack Reynolds. 1967

Mack Reynolds - The Rival Rigelians & A Bertram Chandler - Nebula Alert Ace 1967

Ace Double G-632: THE RIVAL RIGELIANS by Reynolds/NEBULA ALERT by Chandler. 1967

Mack Reynolds & A Bertram Chandler - The Rival Rigelians & Nebula Alert 1967

The Rival Rigelians / Nebula Alert Ace double Mack Reynolds / A Bertram Chandler

Nebula Alerts/The Rival Rigelians Ace Double 1967 G-632 Very Good