(1974)
- Script
- Albert Desprechins
- Pencils
- Pierre Seron
- Inks
- Pierre Seron
- Colors
- ?
- Letters
- ?
- Genre
- aventure (adventure); science-fiction (science fiction)
- Reprints
- from Spirou (Dupuis, 1947 series) #1785, #1786, #1787, #1788, #1789, #1790, #1791, #1792, #1793, #1794, #1795, #1796, #1797, #1798, #1799, #1801, #1802, #1800 (12 octobre 1972), #1803 (2 novembre 1972)
- in De Mini-Mensjes (Dupuis, 1974 series) #2 - Minimensjes in Brontoxico (1974)
which is reprinted- in Mikrofolkets merkelige meritter (Hjemmet / Egmont, 1986 series) #2 - Oppdrag i Brontoxico (1986)
which is reprinted- in Die Abenteuer der Minimenschen (Reiner-Feest-Verlag, 1987 series) #2 - Die Minimenschen in Brontopia (1987)