Written with the general reader in mind, the many contributors to this book cover the ecology, flora and fauna of the Sonora in dozens of short articles. Written by the staff of the Arizona-Sonora Desert Museum, it's an encyclopedic, overview of the region and its biodiversity. The book includes 35 color illustrations, 25 black and white photographs, and 450 line drawings useful for identification.  (BJA26, $31.95)