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Empire in Africa
Campbell, Alexander, (1944)
Das Herz von Indien : über das Land und von den Menschen
Campbell, Alexander, (1959)
Labor and other capital; the rights of each secured and the wrongs of both eradicated : Introd. essay by Joseph Dorfman; and the addition of ̱"The true greenback" by Alexander Campbell
Kellogg, Edward, (1971)