Energy :  block 3, prepared by the course team / 
writtenby [Ian lowe] ... [et al.]. 
 - 2nd ed. 
 - Keynes,Great Britain :  The Open University,  1982 
 - 112 p. :  ill. 
 - Living with technology .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy conversion.<br/>Power resources