About the Author

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Siegbert Uhlig is a Professor Emeritus of African and Ethiopian Studies at Hamburg University in Germany.

David Appleyard is a Professor Emeritus of the Languages of the Horn of Africa at the University of London.

Alessandro Bausi is a Professor of Ethiopian Studies at Hamburg University in Germany.

Wolfgang Hahn is a Professor Emeritus of Numismatics and Monetary History at the University of Vienna.

Steven Kaplan is a Professor Emeritus of African Studies and Comparative Religion at the Hebrew University of Jerusalem.