Poul Anderson

La patrulla del tiempo

Tau Zero

The Science Fiction Megapack

The Second Science Fiction Megapack

La saga de Hrolf Kraki

Science Fiction Triple Features Treasury

Sci Fi Shorts, Volume 4 (Unabridged)

The High Crusade

Poul Anderson: SENTIMENT

Poul Anderson: THE SENSITIVE MAN

Poul Anderson: INSIDE EARTH: Obviously, no conqueror wants his subjects to revolt against his rule. Obviously? This one would go to any lengths to start a rebellion!

Poul Anderson: Witch of the Demon Seas