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   Publishing History
   Editions
   
     
     - 1978 (July) - New English Library (UK) paperback #1
 
     - 1979 (January) - Erich Pabel (West Germany) digest, as Die Todesvögel
 
     - 1979 (November) - Signet (USA) paperback
 
     - 1985 (June) - New English Library (UK) paperback #2
 
     - 1987 (October) - New English Library (UK) paperback #3
 
     - 1988 (unknown) - New English Library (UK) paperback #4
 
     - 2010 (November) - Black Hill Books (UK) e-book
 
     - 2020 (unknown) - Black Hill Books (UK) trade paperback
 
     
   
   Details
   
     
     - ISBN 0-450-03873-4 | 80p | 160 pages | cover art by unknown artist
 
     - ISBN unknown | DM 1,60 | 64 pages | cover art by unknown artist; translated by A. Groß-Hermanns
 
     - ISBN 0-451-08925-1 | $1.75 | 154 pages | cover art by unknown artist
 
     - ISBN 0-450-03873-4 | £1.75 | 160 pages | cover art by Terry Oakes
 
     - ISBN 0-450-03873-4 | £1.95 | 160 pages | cover art by unknown artist
 
     - ISBN 0-450-03873-4 | £1.95 | 160 pages | cover art as 6 above
 
     - ISBN 978-1-907846-09-0
 
     - ISBN 1-911415-17-4 | ISBN-13 978-911415-17-6 | £9.99 | 202 pages | cover art by unknown artist
 
     
   
   Notes
   
     
   
   Original Art
   More Original Art with artwork compared to book covers. 
     
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