1.
Astronomy and Astrophysics Subvol. B : Stars and Star Clusters
by Voigt, H. H., Schaifers, K.
ISBN: 9780387109763
List Price: $1,100.95
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Astronomy and Astrophysics Subvol. C : Interstellar Matter, Galaxy, Universe
by Schaifers, K., Voigt, H. H.
ISBN: 9780387109770
List Price: $1,144.95