International physics & astronomy directory 1969-70 
/ W A Benjamin, Inc.  
 - New York:   W A Benjamin, Inc.,  1969 
 - 802p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy 
<br/><br/><label>Subjects--Index Terms: </label>Science  
<br/><br/><label>Universal Decimal Class. No.: </label>R 061:52+53(058.7)  / K9