Jones, Howard Mumford,  1892- <br/><br/>
The age of energy / 
Howard Mumford Jones 
 - New York :  Viking Press,  1971 
 - xix, 545 p. :  illus. ;  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0670109665 
<br/><br/><label>LCCN: </label>75-146599 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Civilization--1865--1918