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(8)Commun. Sternb. Astr. Inst. nos. 97 and 98, 1954.Google Scholar
(9)
(9)Bugoslavskaya, E., Kamnova, D., Podobed, V. V. and Yakhontova, K. N., Proc. of the Eleventh Astro. Conf.1955; Commun. Sternb. Astr. Inst. no. 94, 1953.Google Scholar