'Care of the racing Greyhound' Its a text book for trainers. It has everything about health and training in it. Its Australian and written by three people,also 'The Greyhound trainer' by Montagu Harrison. This book was around the 60s I think but has a lot of knowledge and very scientific about training for coursing and track,also very good on feeding and the best Ive ever read. Ive read it over and over.
Both books are easy to find,but let me know if you need help. You wont find more in depth books.