Gerard Geoffrey <br/><br/>
Hydro-electric engineering 
Gerard Geoffrey 
 - 1st ed. 
 - London  Sir Isaac Pitman  1949 
 - ix, 181 p.  ill.  19 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>621.31213  / GER