Burlingame, Roger,  1889-1967. <br/><br/>
Engines of democracy;  inventions and society in mature America / 
by Roger Burlingame ... 
 - New York,  London,  C. Scribner's sons;  C. Scribner's sons, ltd.,  1940. 
 - xviii, 606 p. :  front. (port.) illus., plates, diagrs. ;  25 cm. 
<br/><br/>Bibliography: p. 545-568. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions--United States.<br/>Technology--Social aspects--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Civilization.<br/>United States--Economic conditions.
<br/><br/><label>Dewey Class. No.: </label>608  / BUE 1940