Физически факултет, том 104

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Date: 2013-01-24 03:55:19 Cygnus OB2 Stellar evolution Extinction B-V colour Hertzsprung–Russell diagram Cygnus Stellar classification Apparent magnitude Cygnus OB2-12 Astronomy Observational astronomy Space		Физически факултет, том 104 Add to Reading List Source URL: www.phys.uni-sofia.bg Download Document from Source Website File Size: 596,21 KB Share Document on Facebook

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