00418nam a2200121 4500 405 Boben, Rainer & Bechhaus, Marianne Nilotic studies proceedings of the international symposium on languages and history of the nilotic peoples Rainer Voben & Marianne Bechhaus-Gerst Cologne 1982 242 p. Boben, Rainer & Bechhaus, Marianne ddc BK 64043 64017