# Title: Populations of wing lengths and milk yields
# 1: Rank
# 2: Lengths, in tenths of a millimeter, of housefly wings
# 3: Annual milk yield, in hundreds of pounds, for two-year-old Jersey cows
#
#  Reference:
#  Sokal, Hunter
#  A morphometric analysis of DDT-resistand and non-resistant housefly strains,
#  Annals of the Entomological Society of America,
#  Volume 48, pages 499-507, 1955.
#
  1  36  51
  2  37  51
  3  38  51
  4  38  53
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  7  40  54
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