Comparison of computer codes for calculating dynamic loads in wind turbines / 
David A. Spera 
 - Washington, D.C. :  U.S. Govt. Printing Office,  1977 
 - 38 p. ;  28 cm. 
<br/><br/> DOE/NASA/1028-78/16 NASA TM-73773 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wind turbines--Environmental aspects<br/>Wind turbines
<br/><br/><label>Dewey Class. No.: </label>621.45