The third Isaac Asimov double The rings of Saturn; [and], The moons of Jupiter
Asimov, Isaac,1920-1992.
Asimov, Isaac,1920-1992.Lucky Starr and the rings of Saturn.
Asimov, Isaac,1920-1992.Lucky Starr and the moons of Jupiter.
London New English Library
1973
'The rings of Saturn' originally published under the name Paul French as 'Lucky Starr and the rings of Saturn'. Garden City [N.Y.]: Doubleday, 1958. 'The moons of Jupiter' originally published under the name Paul French as 'Lucky Starr and the moons of Jupiter'. Garden City [N.Y.]: Doubleday, 1957