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This book (10 x 8 inches / 25 x 20 cm - soft cover) has been written in the English language. However, it is easy to use for Spanish-speaking scholars, as at many places short remarks in Spanish have been included. The book has 160 pages. The book has about 30.000 words, not counting the Contents, the Appendices and the Bibliography and the like. The book has been lavishly illustrated with more than 280 illustrations, including many black-and-white drawings, some colour-drawings and several colour-plates. Many of the illustrations have been especially made for this book. In this book more than 500 petroglyph panels are discussed.