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By the Author
![A Secure Base](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780465075973.jpg?w=177)
A Secure Base
![Attachment](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780465005437.jpg?w=178)
Attachment
![Loss](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780465042388.jpg?w=178)
Loss
![Separation](https://www.hachettebookgroup.com/wp-content/uploads/2017/09/9780465097166.jpg?w=177)
Separation