Cyril George Hopkins
Books by Cyril George Hopkins
Soil Fertility and Permanent Agriculture
$31.95 - $43.21
The farm that won't wear out
$9.35 - $46.11
Question summary to accompany "Soil fertility and permanent agriculture," - Primary Source Edition
Out of Stock
Peaty Swamp Lands: Sand and Alkali Soils
$26.95
Soil bacteria and phosphates
$16.34
Soil treatment for peaty swamp lands, including reference to sand and "alkali" soils
$13.29
Thirty Years of Crop Rotations on the Common Prairie Soil of Illinois - Primary Source Edition
$15.87 - $26.95
The Story of the Soil from the Basis of Absolute Science and Real Life,
$12.89 - $78.64
Methods of Corn Breeding (Classic Reprint)
Out of Stock
Directions for the Breeding of Corn, Including Methods for the Prevention of In-breeding
$16.34 - $26.95
Nitrogen Bacteria and Legumes: With Special Reference to Red Clover, Cowpeas, Soy Beans, Alfalfa, and Sweet Clover, on Illinois Soils
$16.34 - $46.11
Laboratory Manual for Soil Fertility
$29.95
For Better Crops
$16.99 - $31.71
How Greece Can Produce More Food
$26.95
The Chemistry of the Corn Kernel ..
$29.95
Soil Improvement for the Worn Hill Lands of Illinois: With Special Reference to Southern Illinois
$26.95
Soil Fertility Laboratory Manual
$15.14 - $29.95
Soil Treatment for Wheat in Rotations, with Special Reference to Southern Illinois Soils
$26.95
Summary of Illinois Soil Investigations
$15.87 - $26.95
University of Illinois Agricultural Experiment Station Bulletin No. 94: Nitrogen Bacteria and Legumes; With special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois
$14.89
The Structure of the Corn Kernel and the Composition of its Different Parts
$16.34
Alfalfa on Illinois soil
$16.34 - $26.95
The Sugar Beet in Illinois - Primary Source Edition
$17.50
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