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For Better Crops (1911)

Anglický jazyk

For Better Crops (1911)

Cyril George Hopkins

15.48 € 17.20 € (ušetríte 10%)

The Chemistry of the Corn Kernel

Anglický jazyk

The Chemistry of the Corn Kernel

Cyril George Hopkins

11.97 € 13.30 € (ušetríte 10%)

University of Illinois Agricultural Experiment Station Bulletin No. 94

Anglický jazyk

University of Illinois Agricultural Experiment Station Bulletin No. 94

Cyril George Hopkins

12.64 € 13.30 € (ušetríte 5%)

The Farm That Won't Wear Out

Anglický jazyk

The Farm That Won't Wear Out

Cyril G. (Cyril George) Hopkins

8.74 € 9.20 € (ušetríte 5%)

The Story of the Soil from the Basis of Absolute Science and Real Life,

Anglický jazyk

The Story of the Soil from the Basis of Absolute Science and Real Life,

Cyril G. (Cyril George) Hopkins

19.48 € 20.50 € (ušetríte 5%)

The Story of the Soil from the Basis of Absolute Science and Real Life,

Anglický jazyk

The Story of the Soil from the Basis of Absolute Science and Real Life,

Cyril G. (Cyril George) Hopkins

24.32 € 25.60 € (ušetríte 5%)

University of Illinois Agricultural Experiment Station Bulletin No. 94

Anglický jazyk

University of Illinois Agricultural Experiment Station Bulletin No. 94

Cyril George Hopkins

16.25 € 17.10 € (ušetríte 5%)

Soil Bacteria and Phosphates

Anglický jazyk

Soil Bacteria and Phosphates

Cyril G. (Cyril George) Hopkins

14.73 € 15.50 € (ušetríte 5%)

Summary of Illinois Soil Investigations

Anglický jazyk

Summary of Illinois Soil Investigations

Cyril George Hopkins

27.84 € 29.30 € (ušetríte 5%)

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