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| On medium alkali. | Partly reclaimed alkali soil. | On fully reclaimed alkali soil. |
Plate 5.—Wheat and Barley Grain on Alkali Land treated with Gypsum. | ||
Page:Popular Science Monthly Volume 48.djvu/687
| On medium alkali. | Partly reclaimed alkali soil. | On fully reclaimed alkali soil. |
Plate 5.—Wheat and Barley Grain on Alkali Land treated with Gypsum. | ||