Good point. Judging from the table of contents, he added a chapter up front on various types of trees, tacked on Haskell source in the appendix, and mushed all

Good point. Judging from the table of contents, he added a chapter up front on various types of trees, tacked on Haskell source in the appendix, and mushed all the conclusions together. But I'm a poor grad student, so I'll read the free dissertation over the $75 book. ;)