Hartog, J. P. Den <br/><br/>
Mechanical vibrations / 
J. P. Den Hartog 
 - 4th ed. 
 - New York :  McGraw-Hill Companies,  1956 
<br/><br/>Includes references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical engineering
<br/><br/><label>Dewey Class. No.: </label>620.1  / HAR