​Oops, typo​:

On 25 November 2014 at 19:54, Dominik Wujastyk <wujastyk@gmail.com> wrote:
Dear colleagues,
​...
Penguin Books India (as it was then) also published a book of mine, The Roots of India, in their Penguin Classics series. 
​...​

That should be "​Roots of Ayurveda."​
​DW​