I have just finished reading it. Overall very good. The first two (short) sections are a series of three page essays from various conservation organizations and zoo leaders, stating how conservation groups and zoos are now vital partners.
The bulk of the book, and the interesting part, is section three. This has 25 chapters, each detailing a specific conservation project that is either entirely run by zoos or financially supported by zoos. These are culled from a list of 163 "WAZA-branded" conservation projects, which are listed in the appendix.
Some chapters read better than others, due to the variety of authors. A few chapters are a bit dry, the authors obviously used to writing for scientific journals and not for the general public. But overall it is quite good and the information is invaluable. If anyone thinks accredited zoos are just theme parks and not conservation oriented, they need to see this book.
Here are the 25 projects covered in the chapters of section three (listed in the order they appear in the book):
amur leopard
virgin islands boa
endangered sw australia wildlife (numbat, frogs, etc)
chimpanzee
philippine spotted deer
gorilla & cameroon bushmeat animals
sri lanka elephant
frogs of ecuador
galapagos birds
vietnamese reptiles/amphibians
przewalskis horse
alpine ibex
cat ba langur & hatinh langur
endangered madagascar wildlife
european mink
proboscis monkey
marine otter
indian rhinoceros
partula snails
snow leopard
golden-headed lion tamarin
golden-mantled tree kangaroo & scotts tree kangaroo
sumatran tiger
bearded vulture
grevys zebra