Sangre verde by Ralph Barby

*Sangre Verde* by Ralph Barby is a science fiction novel serialized in Editorial Bruguera's *La Conquista del Espacio* collection (issue 447, March 1979). The story follows a military space expedition aboard the massive starship *Protozoo-Z21*, commanded by Colonel Faber Might. The narrative centers on Captain Shelk Liberius, second-in-command of the fighter squadron, and the veteran pilot Major Percival Tager, a legendary cosmonauts with combat experience from the Alpha-Centauri War. When a private Pioneer vessel disappears near the unexplored planet X-304, Tager leads a three-ship Monomicron reconnaissance mission to investigate and search for survivors while mapping and assessing the mysterious world. The text emphasizes military protocol, spacecraft mechanics, and crew dynamics as the expedition approaches this unknown planetary encounter.