"©—Editorial Vilmar—Barcelona—The Illustrated." Other printings of this story are in Escorpion (Vilmar, 1973 series) #36 (1980) and Escorpion (Vilmar, 1973 series) #100 (1985).
"©—Editorial Vilmar—Barcelona—The Illustrated." There are other printings of this story in Pánico (Vilmar, 1978 series) #35 (1981); Pánico (Vilmar, 1972 series) #35 (1975) and Escorpion (Vilmar, 1973 series) #65 (January 1983)
"©—Editorial Vilmar—Barcelona—The Illustrated." Another printing of this story is in Pánico (Vilmar, 1972 series) #94 (1984).
The original feature title was LOS PROFESIONALES. This appears to be episode 4 of the series. Other international printings include Skorpio Gran Color (Record, 1976? series) #40 (1978) [as La Decision]; and Lanciostory Anno IV (Eura Editoriale, 1978 series) #38 (25 Settembre 1978) [with series title translated as I PROFESSIONISTI]