Dana Forest C. <br/><br/>
Engineering problems manual 
Forest C. Dana, Elmer H. Willmarth. 
 - Third Edition, twelfth impression. 
 - New York ;  London :  McGraw-Hill Book Company, Inc.,  1937. 
 - XI, [1], 313 stron :  ilustracje ;  20 cm. 
<br/><br/>Indeks.