Think I mentioned this book last Fall when I first discovered it--it is a great resource and my new favorite book-- a timely and thorough updated alternative to Eliade. Here's a book review I just came across so you can get a feel for it:

Book Review by Fred H. Previc: "Shamanism: A biosocial paradigm of consciousness and healing" by Michael Winkelman: http://www.epjournal.net/filestore/EP09045046.pdf