E whakaatuhia ana ngā hua e 1 - 2 o te 2 mō te rapu 'Blackwell,' Whakamahine hua
  1. 1
    ā- Broadberry, S. N.
    I whakaputaina 1986
    ...B. Blackwell,...
    Pukapuka
  2. 2
    ā- Booth, Alan, Ph. D.
    I whakaputaina 1985
    ...B. Blackwell,...
    Pukapuka