This book contains full-sized nudes in motion and organizes them by the angle of the photograph. Face-forward shots come first, then forward-left, left, backward-left, backwards, backwards-right and so forth until a complete circle is made. This makes finding the perspective you want quite easy.
All of the photographs are black and white, which is great for pencil, charcoal and any medium lacking color. The last 1/3rd of the book has a male figure.
All in all, this book is great due to these elements:
1) All photographs are large and clear, and original photographs. You aren't drawing a copy of someone else's artwork.
2) Sample "thumbnail" sized artwork is provided on some margins to show you different styles of art and ways to draw the figures.
3) The book is organized such that it is easy to find the pose you want.
4) All of the figures are in motion, something that a real-live model can't hold for long, if at all.