XIIIth General Assembly  proceedings of the 13th General Assembly Prague, Czechoslovakia, August 22 - 31, 1967 
edited by L. Perek                                                    
 - Dordrecht  D. Reidel Publishing  1968 
 - ix,309p 
 - Transaction of the International Astronomical Union; v. XIII .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astronomy and Astrophysics Thesaurus<br/>IAU Transactions
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / PER