Games against nature : an eco-cultural history of the Nunu of equatorial Africa /
Robert Harms, 1999
River of wealth, river of sorrow : the central Zaire basin in the era of the slave
and ivory trade, 1500-1891 / Robert W. Harms, 1981
The Diligent
Information trouvée : Texte imprimé : a voyage through the worlds of the slave trade / Robert Harms, 2002