The series Quasar / tropic stars are based on a common universe. They were pre-published in Spirou but several stories have not been in comics ... This Bd is composed of 2 stories that have already been published (qq pages close) in this volume: "QUASAR 2: BIOMES" ; Ie = UTF8 & qid = 1413756083 & sr = 1-51 & keywords = quasar