Berhe, Tesfaye
(Addis Ababa University, 1988-06)
1\ study of bi 0 I (I'li c(ll an(! ciwmi ea I ch,) ract'.'ri st i CS IWS con<luctf'o on tht'
Aho-Keb~na River, a tropicJI, high altitude m'luntain river, in th~ vicinity
of the city of !\ddis I\bab~, EthitJpia. Ttl<' ...