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ON SPECIAL FEATURES OF NON-THERMAL SOLAR X RADIATION ABOVE 10 KEVELWERT G; HAUG E.1972; SPACE SCI. REV., NETHERL.; DA. 1972; VOL. 13; NO 4-6; PP. 761-762; BIBL. 1 REF.Serial Issue

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SEARCH FOR 4.8-HOUR MODULATION OF THE CYG X - 3 INTENSITY IN HARD X-RAYS.FERETTI L; FRONTERA F; FULIGNI F et al.1975; ASTROPHYS. LETTERS; U.S.A.; DA. 1975; VOL. 16; NO 1; PP. 13-15; BIBL. 6 REF.Article

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