The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 268 photographs and illustrations - mostly color. Free of charge in digital PDF format.
The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 72 photographs and illustrations - some color. Free of charge in digital PDF format.
The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 368 photographs and illustrations - many in color. Free of charge in digital PDF format.
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