por David Hagberg
Flash Gordon Novels de David Hagberg reúne 6 libros de aventura, entre ellos Massacre in the 22nd Century, War of the Citadels y Crisis on Citadel II.
29 libros
7 libros
4 libros
2 libros
Massacre in the 22nd Century
1980
War of the Citadels
Crisis on Citadel II
Forces from the Federation
1981
Citadels Under Attack
Citadels on Earth