I wasn't sure whether this book or "Prehistoric Art: The Symbolic Journey of Humankind" by Randall White would be better, so I bought them both.
It turns out that they are both excellent books. Both are loaded with color photographs of artifacts famous and less well-known. Both have scholarly, informative text, considering anthropological and historical contexts, the techniques and materials used by the artists, the history of the study of prehistoric art, and plenty of cautious speculation about the functions the art had to its artists' communities.
They are organized quite differently: Bahn's moves from topic to topic: chapter 7 is on portable art, chapter 8 on rock shelters and cave art, chapter 9 on outdoors art, and so on. But White's book has a regional arrangement: chapter 4 is on Western Europe, chapter 5 is on Central and Eastern Europe and Sibera, chapter 6 is on Africa, the Near East and Anatolia, and so on.
Obviously you can see that White's book has more of a global focus than Bahn's. In fact, Bahn's third chapter deals with prehistoric art outside of Europe; in every other chapter he focuses on European art, especially the caves.
Although Bahn's book devotes a chapter to "Portable Art" such as jewelry and miniature statues (including the famous "Venus figurines"), White's book has a far superior coverage. On the other hand, Bahn has better coverage of interesting issues such as how to reproduce prehistoric art for public enjoyment, dating issues, and forgeries.
If you are primarily interested in European cave art and will be content with a glance at the rest of the world, then Bahn's book is better for you. Personally, although Bahn deals with some interesting issues that White neglects, ultimately I prefer White's global perspective; further, I appreciate his introductory comments about modern Western art and cultural assumptions, and consideration of what might be universal in human art.
Incidently, when it comes to books about art, for some reason I prefer hardcover to paperback; and at this time White's book in hardcover is available at great discount on Amazon, making it almost as inexpensive as Bahn's.
So, my preference is clear. However, I want to emphasize that despite my partiality to White's book, they are certainly both excellent, and I do not think one of them is clearly, inherently better than the other. It just depends on what you are looking for.