A horizantal axis sail windmill for use in irrigation  / 
S. K. Tewari...[etal] ; published by National Aeronautical Laboratory, Bangalore 
 - Bangalore :  National Aeronautical Laboratory,  1978 
 - 13 p. ;  28 cm. 
 - Nal Technical note TN-54 .
<br/><br/><label>Dewey Class. No.: </label>629.13072