Wraithsheet
Gregg the Intern
The Ninth World Bestiary 1
Unknown
Treason in Word and Deed
Mongoose Publishing
Star Trek: The Original Series - 110 - New Earth 5 - Thin Air
Dean Wesley Smith & Kristine Kathryn Rusch
Star Trek: The Original Series (110)
Great Britain [electronic resource]: handbook for travellers
Karl Baedeker (Firm)