00884nam a2200217Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 082.2:52 PER General assembly of International Astronomical Union 13th Czechoslovakia 1967 Aug. 22 - 31 17905 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 Astronomy 80 Astronomy and Astrophysics Thesaurus IAU Transactions 5483 Perek, L., ed. 5484 International Astronomical Union BK 10533 10533 0 0 0 0 BAN KOD GEN 1992-12-21 0 082.2:52/ PER 11444 2021-11-05 1992-12-21 BK