Lead shot in Bewick's Swans
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Mary E Evans | N A Wood | Janet Kear | M. Evans | J. Kear | N. A. Wood
[1] W. Elder. Fluoroscopic measures of shooting pressure on Pink-footed and Grey Lag Geese , 1954 .
[2] J. Kear,et al. A Jacket for Holding Large Birds for Banding , 1972 .