entry in Dictionary of National Biography
London ;Macmillan, 1905.
Edinburgh, W. Blackwood and Sons, 1899
London: Macmillan, 1895.
London, Macmillan, 1912.
London: Macmillan, 1910.
London [etc.]: MacMillan, 1897.
Glasgow, J. Maclehose and sons, 1916.
London ;Macmillan, 1897.
1898 Czech book edition
book edition published in 1906
book edition published in 1903
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