The philosopher's stone.
By: Illustrated by Robin Hall.
Contributors: Hall, Robin, illus.
Edition: [1st ed.]
Publisher: Atheneum
Published: 1971
Place of publication: New York
Language: eng
Number of pages: 123
Subjects: Time travel -- Fiction.
Description: A twelfth-century sorcerer must get the philosopher's stone that is in the rock collection of a twentieth-century boy.