Sergio A. Sierra
Sergio A. Sierra has written at least 4 books. Their most popular book is Thor a mocné kladivo Mjölnir with 2 saves with an average rating of 3⭐.
#1 of 1 in Mitos Nórdicos
Thor a mocné kladivo Mjölnir
BySergio A. Sierra
2019 • 2 Readers • 120 pages • 3
Frankenstein by Mary Shelley: A Dark Graphic Novel
BySergio A. Sierra(Adapter),Meritxell Ribas(Illustrator)
2009 • 1 Reader • 3
#1 of 1 in Mitos Nórdicos
Thor e il potere di Mjölnir
BySergio A. Sierra,Laia San José Beltrán,+1 more
2019 • 1 Reader • 4
Thor na Terra dos Gigantes
BySergio A. Sierra