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  1. By: Young, David
    Type: Article
    In: Field Museum of Natural History bulletin
    Volume: 46
    Issue: 1
    Date: 1975
    Page Range: 3--9
    Publication Info: [Chicago, Ill.], The Museum, [1972]-©1990
  2. By: Young, David
    Type: Article
    In: British journal of entomology and natural history
    Volume: 13
    Date: 2001
    Page Range: 255--256
    Publication Info: [London], British Entomological and Natural History Society, 1988-