Finding one book that does an excellent job of covering all different aspects of the darkroom is a tall order. What kind of "look" are you going for? Are you looking for specific info on alternative processes, toning, masking, lith, retouching, etc.?
David Vestal's art of enlarging is a good basic book (one of the better ones), but it sticks more or less to "straight" B&W darkroom work.
The Bartlett book is also good, but don't expect it to be an all encompassing tome...80% of it has to deal with variations on advanced dodging and burning techniques. If you are looking for a book to help you dodge and burn this is the one to get.
Tim Rudman's books are very good. "The photographers master printing course" is a good one that covers most bases of general darkroom work. His toning book is THE toning reference. He also has some lith books that are good if you wan't to delve into that arena.
One of my favorites is an old one - "Lootens on photographic enlarging and print quality" is a fun book from the 50's that is still a very valuable reference. It covers some topics that you would be hard pressed to find in any "modern" darkroom book.
I've heard very good things about "way beyond monochrome" but I have not had a chance to page through it - it might be worth a look.