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1
Published 1973
Springer Netherlands
Table of Contents: “... Stellaire) -- 26. Étoiles Doubles (Double Stars) -- 27. Variable Stars (Étoiles Variables) -- - Report...”
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2
Published 1971
Springer Netherlands
Table of Contents: “...) -- 26 Double Stars (Étoiles Doubles) -- 27 Variable Stars (Étoiles Variables) -- 28 Galaxies -- 29...”