![File:Johann Zoffany - Portrait of the Archduchess Maria Amalia of Austria, Duchess of Parma - 2015.663 - Museum of Fine Arts, Houston.jpg - Wikimedia Commons File:Johann Zoffany - Portrait of the Archduchess Maria Amalia of Austria, Duchess of Parma - 2015.663 - Museum of Fine Arts, Houston.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d4/Johann_Zoffany_-_Portrait_of_the_Archduchess_Maria_Amalia_of_Austria%2C_Duchess_of_Parma_-_2015.663_-_Museum_of_Fine_Arts%2C_Houston.jpg)
File:Johann Zoffany - Portrait of the Archduchess Maria Amalia of Austria, Duchess of Parma - 2015.663 - Museum of Fine Arts, Houston.jpg - Wikimedia Commons
![N/A. English: Plate 12. DIFFERENTIAL PATTERNS. a. Sunspot Nos. 1610-1910 at 11.4. b. 57 European trees, 1830-1910 at 11.4. c. 80 European trees, 1800-1910 at 11.4. d. South Sweden, 1830-1910 at 12.0. N/A. English: Plate 12. DIFFERENTIAL PATTERNS. a. Sunspot Nos. 1610-1910 at 11.4. b. 57 European trees, 1830-1910 at 11.4. c. 80 European trees, 1800-1910 at 11.4. d. South Sweden, 1830-1910 at 12.0.](https://l450v.alamy.com/450v/p5wndr/na-english-plate-12-differential-patterns-a-sunspot-nos-1610-1910-at-114-b-57-european-trees-1830-1910-at-114-c-80-european-trees-1800-1910-at-114-d-south-sweden-1830-1910-at-120-e-vermont-group-1650-1910-at-113-f-flagstaff-group-500-years-at-114-g-flagstaff-group-at-235-years-h-norway-1740-1910-at-238-years-i-austria-1830-1910-at-220-years-j-norway-n-2-400-years-at-330-k-vermont-250-years-at-325-l-sweden-1740-1910-at-370-m-sequoia-1300-250-bc-at-330-n-flagstaff-500-years-at-330-o-sequoia-3200-years-at-101-p-flagstaff-500-year-p5wndr.jpg)
N/A. English: Plate 12. DIFFERENTIAL PATTERNS. a. Sunspot Nos. 1610-1910 at 11.4. b. 57 European trees, 1830-1910 at 11.4. c. 80 European trees, 1800-1910 at 11.4. d. South Sweden, 1830-1910 at 12.0.
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