Astronomy & Space in 1975
Astronomy: A Handbook
by
Roth, Gunter Dietmar
Veränderliche Sterne Am Südhimmel, Teil IV
by
Gessner, Herta
Veränderliche Sterne Am Südhimmel, Teil 3
by
Gessner, Herta, Meinunger, Isolde
The Large Scale Structure of Space-Time
by
Hawking, S. W., Ellis, G. F. R.
Creative Evolution
by
Bergson, Henri Louis, Unknown