Title: Power twins and the worm puzzle
First published: January 1976
Description: Uncle Grigorian, who turns out to be an alien, takes the Price twins and their cousin Tubs to the capital of the Galactic Empire, where they serve as unbiased arbitrators in the Worm War.
Subjects: Juvenile fiction, Fiction, Science fiction, Twins, Uncles, Life on other planets, Extraterrestrial beings, Children's stories, Children's fiction, Twins, fiction, Mystery and detective stories
LC classification: PZ7.F73555 Po 1990