Highlights in astronomy  vol. 1, proceedings of XIIIth General Assembly of the International Astronomical Union, Prague, Czechoslovakia, August 22-31, 1967 
edited by Lubos Perek                                           
 - Dordrecht  D. Reidel Publishing  1968 
 - x, 548p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astronomy and Astrophysics Thesaurus<br/>IAU highlights
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / IAU-HL-1