The Day the Sun Stood Still; Three Original Novellas of Science Fiction, Poul Anderson  

A MIDSUMMER TEMPEST POUL ANDERSON  

HROLF KRAKI'S SAGA POUL ANDERSON  

Best of Poul Anderson Poul Anderson  

Mermans Children Poul Anderson  

DEVILS GAME Poul anderson  

Shield Poul Anderson  

Avatar Poul Anderson  

Starship Poul Anderson  

Twilight World Poul Anderson  

Vault of the Ages Poul Anderson  

Time Patrolman Poul Anderson