Star (October 1975) 24035 SF Mack Reynolds The Five Way Secret Agent / Mercenary from Tomorrow (November 1974) The remaining novels do not have complete date information, so they are sorted in numerical order of the serial number. Note that the following are also not in tête-bêche format. 01685 SF Gordon R. Dickson Alien Art / Arcturus Landing (June 1981) 11555 SF A. Bertram Chandler The Commodore at Sea / Spartan Planet (June 1979) 11556 SF A. Bertram Chandler The Commodore at Sea / Spartan Planet (September 1981; same cover as 11555-1) 11705 SF Robert Silverberg Conquerors From the Darkness / Master of Life and Death (July 1979) 24890 SF H. Beam Piper Four-Day Planet / Lone Star Planet (April 1979) 24892 SF H. Beam Piper Four-Day Planet / H. Beam Piper and John J. McGuire Lone Star Planet (September 1984) 37063 SF A. Bertram Chandler The Inheritors / The Gateway to Never (June 1978) 37064 SF A. Bertram Chandler The Inheritors / The Gateway to Never (September 1981) 37108 SF A. Bertram Chandler Into the Alternate Universe / Contraband From Otherspace (March 1979) 37109 SF A. Bertram Chandler Into the Alternate Universe / Contraband From Otherspace (September 1981) 37130 SF Robert Silverberg Invaders From Earth / To Worlds Beyond (July 1980) 37365 SF Robert E. Howard The Iron Man / The Adventures of Dennis Dorgan 49252 SF Philip José Farmer Lord of the Trees / The Mad Goblin (May 1980) 65874 SF Robert Sheckley The People Trap / Mindswap (August 1981) 66093 SF Walter Ernsting (as Clark Darlton) Perry Rhodan 109 The Stolen Spacefleet / Klaus Mahn (as Kurt Mahr) Perry Rhodan 110 Sgt. Robot 66094 SF Willi Voltz (as William Voltz) Perry Rhodan 111 Seeds of Ruin / K. H. Scheer Perry Rhodan 112 Planet Mechanica 66095 SF Walter Ernsting (as Clark Darlton) Perry Rhodan 113 Heritage of the Lizard People / Klaus Mahn (as Kurt Mahr) Perry Rhodan 114 Death's Demand 66096 SF Kurt Brand Perry Rhodan 115 Saboteurs in A-1 / Willi Voltz (as William Voltz) Perry Rhodan 116 The Psycho Duel 66097 SF K. H. Scheer Perry Rhodan 117 Savior of the Empire / Walter Ernsting (as Clark Darlton) Perry Rhodan 118 The Shadows Attack 66098 SF Winfried Scholz (as W.W. Shols) Perry Rhodan The Wasp Men Attack / Ernst Vlcek Atlan #1: Spider Desert 66099 SF Klaus Mahn (as Kurt Mahr) Perry Rhodan Menace