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  1. Henry, G. M. · 1933

    The cry of the Ceylon Scops Owl Otus sunai leggei

    Spolia Zeylanica 17(3): 246–248 · Journal Article

  2. Phillips, W. W. A. · 1933

    The cry of the Ceylon Scops Owl Otus sunia leggei

    Spolia Zeylanica 17(3): 244–246 · Journal Article