Energy R & D:   Problems and perspectives 
/ OECD 
 - France:   OECD,   1975 
 - 243p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Solar heating Solar energy 
<br/><br/><label>Universal Decimal Class. No.: </label>620.92  / L5