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  1. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 149--150
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 71--73
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 83
    Date: 1963
    Page Range: 4--7
    Publication Info: London, British Ornithologists' Club, 1893-
  4. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 84
    Date: 1964
    Page Range: 117--118
    Publication Info: London, British Ornithologists' Club, 1893-
  5. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 89
    Date: 1969
    Page Range: 16--16
    Publication Info: London, British Ornithologists' Club, 1893-
  6. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 82
    Date: 1962
    Page Range: 133--134
    Publication Info: London, British Ornithologists' Club, 1893-
  7. By: Clancey, P. A. (Phillip Alexander), - Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 89
    Date: 1969
    Page Range: 4--6
    Publication Info: London, British Ornithologists' Club, 1893-
  8. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 84
    Date: 1964
    Page Range: 46--47
    Publication Info: London, British Ornithologists' Club, 1893-
  9. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 82
    Date: 1962
    Page Range: 26--30
    Publication Info: London, British Ornithologists' Club, 1893-
  10. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 83
    Date: 1963
    Page Range: 114--116
    Publication Info: London, British Ornithologists' Club, 1893-
  11. By: Clancey, P. A. (Phillip Alexander), - Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 128--131
    Publication Info: London, British Ornithologists' Club, 1893-
  12. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 54--56
    Publication Info: London, British Ornithologists' Club, 1893-
  13. By: Lawson, Walter J
    Type: Article
    In: Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn
    Volume: 38
    Date: 1987
    Page Range: 19--45
    Publication Info: Bonn, Das Forschungsinstitut,
  14. By: Lawson, Walter J
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 104
    Date: 1984
    Page Range: 144--146
    Publication Info: London, British Ornithologists' Club, 1893-