Mandee,
I am not sure if you are looking for a clinical book or not but if so, I LOVE the book "Symptom Control in Hospice and Palliative Care" by Peter Kaye. It is my very favorite all around Hospice book and it is portable enough to go in your nursing bag or keep in your car for a reference. I've had it a long time and I don't really remember where I got it but I am sure you can find a copy somewhere.
I also like Dying Well by Ira Byock.....he is terrific and I'd read anything he wrote.