1. L'occupation du sol en Haute Volta. / Rémy, Gérard; Bilgho, A. (ill.); Scale of 1:1 000 000. Date of publication: unknown. (files: 01471RC_IRD_BFA_ILSI_----_----_IRD_BFA_USOL_----_1000000.tif, 01471RC_IRD_BFA_USOL_----_1000000_IRD_BFA_USOL_----_1000000.tif)