Coville, Bruce I was a Sixth Grade Alien. - New York : Aladdin Paperbacks, 1999. When aliens come to Earth on an interplanetary trade mission, sixth grader Tim makes friends with the ambassador's son and together they uncover a plot to sabotage the missions. ISBN: 0-671-02650-x Subjects--Topical Terms: Extraterrestrial beings--Fiction--Schools--Fiction--Science fiction