New York: D. Appleton company, 1893.
New York: D. Appleton and company, 1893.
book (1906) by T. R. R. Stebbing, vol. 21 of the series "Das Tierreich"
book (1913) by T. R. R. Stebbing, vol. 39 of the series "Das Tierreich"
London: Longmans, Green, 1871.
1897 July, article
London: s.n., 1900-1920
London: Zoological Society of London, 1886
[Cape Town]: South African Museum, 1900-1921.
London, K. Paul, Trench, Trübner, 1891.
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