Medical skill books?

Are there any skill books for First Aid beyond the Big Book of First Aid? I was expecting to find something like a Gray’s Anatomy or surgical textbook in a library or doctor’s office, but so far haven’t seen any such thing.

I think theres a book called paramedics that helps first aid.

Thanks. I’ve seen that one - it’s easier to read than the Big Book of First Aid, but only trains you to level 1.