Hopkins Cyril George

Summary Of Illinois Soil Investigations

Summary Of Illinois Soil Investigations

For Better Crops

For Better Crops

The Story Of The Soil

Nitrogen Bacteria And Legumes

Soil Fertility Laboratory Manual

Soil Fertility Laboratory Manual

The Farm That Won't Wear Out

The Story Of The Soil

In Memoriam, Cyril George Hopkins: Eighteen Hundred And Sixty-Six, Nineteen Hundred And Nineteen (Classic Reprint)

University Of Illinois Agricultural Experiment Station Bulletin No. 94

The Story Of The Soil From The Basis Of Absolute Science And Real Life,

In Memoriam. Cyril George Hopkins. Eighteen Hundred And Sixty-Six--Nineteen Hundred And Nineteen

The Story Of The Soil; From The Basis Of Absolute Science And Real Life

Author, U: In Memoriam, Cyril George Hopkins

Composition And Digestibility Of Corn Ensilage, Cowpea Ensilage, Soja Bean Ensilage, And Corn-Fodder