Subject
Show values starting with
- fireballs1
- historie1
- history1
- integral ligt1
- komety1
- kometární astronomie1
- metal atom emission1
- microdensitometer1
- microphotometers1
- nature and place of comets1
- objective Tessar1
- observations1
- photoelectric observations1
- photoelectric photometry1
- photographic isophotes1
- photographic photometry1
- photometric tracing1
- photometrical measurements1
- podstata a poloha komet1
- polarization of light1