Wagner, Hermann Josef  <br/><br/>
Introduction to hydro energy systems :  basics, technology and operations / 

 - Germany :  Springer verlag Berlin Heidelberg. ;  c2011 
 - ix, 129 p. :  ill. ;  23 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>9783642268946 
<br/><br/><label>LC Class. No.: </label>24369-24370 
<br/><br/><label>Dewey Class. No.: </label>375  / WAG