Bradt guide to Kazakhstan
The Bradt guide is thoroughly researched and covers almost all interesting places in Kazakhstan. It is well-written by the original author, and is invaluable to anyone planning to travel Kazakhstan for more than a week or 2.
The 2nd edition was very poor in its updates. Edition 3 is out in 2018, but I have not seen it yet. With a new author, I hope for the best.
Nomadic routes: from Caspian to Altai
Odyssey gives more room for Kazakhstan, offering more background than Bradt. The practical information is very much out of date, and mostly unusable. Why get this book then as a travel guide? For the ideas: it has many hints of interesting destinations for the dedicated slow traveler to ferret out, and a lot of history and anecdotes.
All in all, it’s a great guidebook for those on a mission to really get to know Kazakhstan. It also doubles as a coffee table book because of its many pictures and 2-page spreads. Latest edition 2010.