Riemannian Submersions and Related Topics (repost)

The reader should have little difficulty in locating the many different concepts in this rich and rewarding text. Young geometers looking for problems and more importantly directions for future work will find reading this book provides a fine source of material and papers. -- Mathematical Reviews
This is a very well-written and interesting book on Riemannian submersions and it is the first monograph in the literature about this topic. -- Zentralblatt MATH