The arctic patrol mystery Book 700/Completed:
LC Control Number:
Dixon, Franklin W.
New York, Grosset & Dunlap 
176 p. illus. 20 cm.
While searching in Iceland for a missing sailor sought by an insurance company, the teen-age detective brothers uncover a plot threatening the life of a United States astronaut and the secrets of NASA's moon project.
Mystery and detective stories.
Dixon, Franklin W. Hardy boys mystery stories ; 48.