International physics & astronomy directory 1969-70 

 - New York :  W.A. Benjamin,  1969. 
 - 1 v. ;(viii,802p.)  24 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Physics--Directories.  Astronomy--Directories  Astronomy--Bibliography  Universities--Bibliography  Universities--Directory.  Societies--Bibliography  Societies--Directory. 
<br/><br/><label>Dewey Class. No.: </label>530/.025  / INT