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By the Author
![The Unfolding Universe](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780738208756.jpg?w=184)
The Unfolding Universe
![The Concepts Of Science](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780738208343.jpg?w=185)
The Concepts Of Science
![The Story Of Astronomy](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780738205861.jpg?w=184)
The Story Of Astronomy