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Modern high farming. A treatise on soils, plants, and manures — Illustration, Page 9
Agricultural chemistry↗
Modern high farming. A treatise on soils, plants, and manures — Illustration, Page 69
Agricultural chemistry↗
Modern high farming. A treatise on soils, plants, and manures — Illustration, Page 89
Agricultural chemistry↗
Indications of food starvation in our cultivated plants; being the results of experiments and observations at the Experimental Station of the Duchy of Anhalt, Bernburg; the Institute for Soil and Plant Cultivation Instruction of the Royal Agricultural College, Bonn-Poppelsdorf; the Agricultural Institute of Goettingen University [and] the Experimental Farm, Lauchsthädt — Illustration, BHL page 21406592
Fertilizers↗
Indications of food starvation in our cultivated plants; being the results of experiments and observations at the Experimental Station of the Duchy of Anhalt, Bernburg; the Institute for Soil and Plant Cultivation Instruction of the Royal Agricultural College, Bonn-Poppelsdorf; the Agricultural Institute of Goettingen University [and] the Experimental Farm, Lauchsthädt — Illustration, BHL page 21406597
Fertilizers↗