JAMES ERTEL <br/><br/>
1981 YEARBOOK OF SCIENCE AND THE FUTURE  

 - CHICAGO  ENCYCLOPEDIA BRITANNICA INC   1979 
 - 447p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia 
<br/><br/><label>Dewey Class. No.: </label>030  / ERT-Y