I thoroughly enjoyed the hardcover edition of this book. I haven't seen the paperback, but I thought it would be useful to cross-reference to the hardback, since Amazon didn't: Discovering Dinosaurs: in the American Museum of Natural History
The review there is close to my own reaction: this is a first-rate book. And it's available for all of $4 used. The book is a bit out-of-date -- it was published in 1995. Unless you're a specialist, you'll be fine with this book. The bones don't change, and the American Museum of Natural History still has the planet's best dinosaur collection. Handsomely produced, well-illustrated and well-written. Go for it!
Happy reading--
Peter D. Tillman
Consulting Geologist, Arizona and New Mexico (USA)