21. Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic Type: model:periodicalitem and TEXT Language: Czech and English Description: 51 and 3rd consultation on solar physics and hydrodynamics Tatranská Lomnica 13.-16. 10. 1964 Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
22. Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic Type: model:periodicalitem and TEXT Language: Czech and English Description: 50 and Dioptric tables of the Earth´s atmosphere Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
23. Umění. Obsah ročníku Type: model:supplement and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public