Le grand phénomène sibérien
From Author Wars - https://authorwars.com/books/le-grand-phenomene-siberien-1484442.html
Editions/Publications:
- Unknown. Galaxie (2ème série), #6 (Unknown, Willy Ley, OPTA, F2.50, 164 pages, digest, MAGAZINE)
From Author Wars - https://authorwars.com/books/le-grand-phenomene-siberien-1484442.html