Overman, Michael. <br/><br/>
Understanding energy 
Michael Overman. 
 - Guildford  Lutterworth Press  c1974. 
 - 122 p.  ill.  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0718820827 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Power (Mechanics)<br/>Power resources