Ref http://char.txa.cornell.edu/nonwest/africa/africahi.htm Ref Ref http://char.txa.cornell.edu/nonwest/africa/africahi.htm http://char.txa.cornell.edu/nonwest/africa/africahi.htm http://char.txa.cornell.edu/nonwest/africa/africahi.htm Ref Ref http://char.txa.cornell.edu/nonwest/africa/africahi.htm