You can find digital versions of the book through several online libraries and platforms:
: Young protagonists Marko and Lyuda , along with the boy Hrytsko, face dangerous trials, including confrontations on lighthouses and enemy submarines, to defend their homeland. Where to Read or Download shkhuna kolumb kniga skachat
: A foreign agent named Anch , posing as a photographer, infiltrates the island to assassinate Professor Ananyev and steal his secret scientific project—extracting cheap helium from torianite sand. At the time, helium was a strategic resource vital for the era's giant dirigibles. You can find digital versions of the book