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The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 162 photographs and illustrations - including many early seed catalog covers. Free of charge in digital PDF format.
Revised 2nd edition, with roughly twice as many pages and twice as many photos as the 1st edition of 2011. The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographical index. 235 photographs and illustrations. Free of charge in digital PDF format on Google Books.
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The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 114 photographs and illustrations - mostly color. Free of charge in digital PDF format.
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The world;s most comprehensive, we documented, and well illustrated book on this subject. With extensive index. 520 photographs and illustrations. Free of charge in digital format on Google Books.
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