How to construct a cheap wind machine for pumping water 

 - [2nd] rev. ed 
 - Quebec  Brace Research Institute, MacDonald College of McGill University  1979 
 - [16]p.  ill. 
 - Do-it-yourself leaflet  no. L-5 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wind power<br/>Pumping machinery