Cyril G. 1866 1919 Hopkins: Полный список книг

Question Summary to Accompany "Soil Fertility and Permanent Agriculture,"

Cyril G. 1866-1919 Hopkins

The Farm That Won.t Wear Out

Cyril G. 1866-1919 Hopkins

Thirty Years of Crop Rotations on the Common Prairie Soil of Illinois

Cyril G. 1866-1919 Hopkins, Wm G. 1869- Eckhardt, J E. 1869- Readhimer

Question Summary to Accompany "Soil Fertility and Permanent Agriculture,"

Cyril G. 1866-1919 Hopkins

Thirty Years of Crop Rotations on the Common Prairie Soil of Illinois

Cyril G. 1866-1919 Hopkins, Wm G. 1869- Eckhardt, J E. 1869- Readhimer

Peaty swamp lands: sand and "alkali" soils

Cyril G. 1866-1919 Hopkins

The chemistry of the corn kernel

Cyril G. 1866-1919 Hopkins

Soil Fertility and Permanent Agriculture

Cyril G. 1866-1919 Hopkins

Soil Fertility and Permanent Agriculture

Cyril G. 1866-1919 Hopkins

The Farm That Won.t Wear Out

Cyril G. 1866-1919 Hopkins

Question Summary to Accompany "Soil Fertility and Permanent Agriculture,"

Cyril G. 1866-1919 Hopkins

The Structure of the Corn Kernel and the Composition of its Different Parts

L H. 1872- Smith, Edward M. 1879-1938 East, Cyril G. 1866-1919 Hopkins

2018

Alfalfa on Illinois Soil

Cyril G. 1866-1919 Hopkins

2018

Directions for the Breeding of Corn, Including Methods for the Prevention of In-breeding

Cyril G. 1866-1919 Hopkins, Edward M. 1879-1938 East

2018

Thirty Years of Crop Rotations on the Common Prairie Soil of Illinois

Cyril G. 1866-1919 Hopkins, Wm G. 1869- Eckhardt, J E. 1869- Readhimer

2018