Cyril G. Hopkins

No biography available.

Works (35)

Cover of Laboratory manual for soil fertility

Laboratory manual for soil fertility

Cover of Soil fertility and permanent agriculture

Soil fertility and permanent agriculture

Cover of Soil fertility laboratory manual

Soil fertility laboratory manual

Cover of Improvement in the chemical composition of the corn kernel

Improvement in the chemical composition of the corn kernel

Cover of Soil treatment for peaty swamp lands, including reference to sand and "alkali" soils

Soil treatment for peaty swamp lands, including reference to sand and "alkali" soils

Cover of How Greece can produce more food

How Greece can produce more food

Cover of Illinois wheat yields with nature's fertilizers

Illinois wheat yields with nature's fertilizers

Cover of Thirty years of crop rotations on the common prairie soil of Illinois

Thirty years of crop rotations on the common prairie soil of Illinois

Cover of Radium as a fertilizer

Radium as a fertilizer

Cover of Composition and digestibility of corn-fodder and corn stover

Composition and digestibility of corn-fodder and corn stover

Cover of Laboratory manual for soil fertility

Laboratory manual for soil fertility

Cover of Methods of corn breeding

Methods of corn breeding

Cover of The farm that won't wear out

The farm that won't wear out

Cover of Soil fertility laboratory manual

Soil fertility laboratory manual

Cover of Peaty swamp lands

Peaty swamp lands

Cover of Potassium from the soil

Potassium from the soil

Cover of The structure of the corn kernel and the composition of its different parts

The structure of the corn kernel and the composition of its different parts

Cover of Soil fertility and permanent agriculture

Soil fertility and permanent agriculture

Cover of The chemistry of the corn kernel ..

The chemistry of the corn kernel ..

Cover of Directions for the breeding of corn, including methods for the prevention of in-breeding

Directions for the breeding of corn, including methods for the prevention of in-breeding

Cover of The fertility in Illinois Soils

The fertility in Illinois Soils

Cover of For Better crops

For Better crops

Cover of Nitrogen bacteria and legumes

Nitrogen bacteria and legumes

Cover of Soil treatment for the Lower Illinois Glaciation

Soil treatment for the Lower Illinois Glaciation

Cover of Winnebago County soils

Winnebago County soils

Cover of Question summary to accompany "Soil fertility and permanent agriculture,"

Question summary to accompany "Soil fertility and permanent agriculture,"

Cover of The "gist" of four years' soil investigation in the Illinois corn belt

The "gist" of four years' soil investigation in the Illinois corn belt

Cover of Moultrie County soils

Moultrie County soils

Cover of Soil bacteria and phosphates

Soil bacteria and phosphates

Cover of Alfalfa on Illinois soil

Alfalfa on Illinois soil

Cover of Soil improvement for the worn hill lands of Illinois

Soil improvement for the worn hill lands of Illinois

Cover of Soil treatment for wheat in rotations, with special reference to southern Illinois soils

Soil treatment for wheat in rotations, with special reference to southern Illinois soils

Cover of The story of the soil, from the basis of absolute science and real life

The story of the soil, from the basis of absolute science and real life

Cover of Composition and digestibility of corn ensilage, cowpea ensilage, soja bean ensilage, and corn-fodder

Composition and digestibility of corn ensilage, cowpea ensilage, soja bean ensilage, and corn-fodder

Cover of A new limestone tester

A new limestone tester