World water day / 
Engineering Congress 
 - Lahore: :  Engr. Syed mansoob ali zaidi  N.D 
 - 248 pages ;  Includes illustrations. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water and energy
<br/><br/><label>Dewey Class. No.: </label>P 333.9162 WAT N.D