Melkamu, Abraham Hailemelekot <br/><br/>
Determination of Spatio -Temporal Differences of Water Hyacinth and its Effects in Lake Aba Samuel, South West of Addis Ababa, Ethiopia 

 - Masters thesis  Addis Ababa University  2009 
 - 97p 
<br/><br/><label>LC Class. No.: </label>MEL 2009