00669nam a2200193Ia 4500003000900000008004100009040001600050080002300066100002000089245014700109260007900256300001000335650004100345650001000386650001700396650002300413650002000436700001900456IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a084.4:523.917bLET  aLetfus, Vojtech 0aAtlas of the green corona synoptic charts for the period 1947-1976cVojtech Letfus and  Julius Sykora                                           aBratislavabAstronomical Institute of the Slovak Academy of Sciencesc1982  a222p.  aAstronomy and Astrophysics Thesaurus  aAtlas  aGreen corona  aSolar corona atlas  aSynoptic charts  aSykora, Julius