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  1. By: Watson, G J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 99
    Date: 1979
    Page Range: 102--105
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Watson, G J - Whitfield, Philip
    Type: Article
    In: The journal of raptor research
    Volume: 36
    Issue: 1
    Date: 2002
    Page Range: 41--49
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  3. By: Watson, G J - Langford, F M - Gaudron, Sylvie Marylène - Bentley, Matthew Graeme.
    Type: Article
    In: The Biological bulletin
    Volume: 199
    Date: 2000-08-01
    Page Range: 50--58
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  4. By: Alvin, K L - Watson, G J - Spicer, R A
    Type: Article
    In: Palaeontology
    Volume: 37
    Date: 1994
    Page Range: 173--180
    Publication Info: London, Palaeontological Association, 1957-