[lrek]

According to the Internet, published in Spain, 1945, by Editorial Marco. https://www.tebeosfera.com/numeros/guerra_a_la_tierra_1945_marco_1.html. Or 1946 and 1947, according to another part of the Internet

Written by Marijac (pseudonym of Jacques Dumas) [https://www.lambiek.net/artists/m/marijac.htm] and drawn by Auguste Liquoise [https://www.lambiek.net/artists/l/liquos_auguste.htm] (Part 1) and Pierre Duteurtre (Part 2) [https://www.lambiek.net/artists/d/dut.htm]. Parts 3-7 artist(s) unknown, but there is a signature in the lower right hand corner of Part 5, Page 8.

Link to the book: Guerra a La Tierra 1