Letfus, Vojtech <br/><br/>
Atlas of the green corona synoptic charts for the period 1947-1976 
Vojtech Letfus and  Julius Sykora                                          
 - Bratislava  Astronomical Institute of the Slovak Academy of Sciences  1982 
 - 222p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Atlas<br/>Green corona<br/>Solar corona atlas<br/>Synoptic charts
<br/><br/><label>Universal Decimal Class. No.: </label>084.4:523.917  / LET