Hughes, Monica. The keeper of the Isis Light / Monica Hughes. - New York: Simon & Schuster , c2000. - 232 p. ; 20 cm. - The Isis trilogy ; 1 . Originally published: Hamish Hamilton Children's, 1980. ISBN: 9781416989639 Nat. Bib. No.: GBA426381 bnb Dewey Class. No.: 823.914