Exploration of the universe

• Main Author: Abell, George O.
• Other Authors: Morrison, David, Wolff, Sidney C.
• Format: Book
• Language: English
• Published: Philadelphia Saunders College Publishing 1991
• Edition: 6th Edition, 1993 Version
• Series: Saunders Golden Sunburst Series
• Subjects: Αστρονομία; Κοσμολογία