Search Results - "Agriculture"

1

Illinois soils in relation to systems of permanent agriculture /

by Hopkins, Cyril George
Published 1907

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

2

Chemical principles of soil fertility /

by Hopkins, Cyril George
Published 1908

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

3

Shall we use natural rock phosphate or manufactured acid phosphate for the permanent improvement of Illinois soils? /

by Hopkins, Cyril George
Published 1909

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

4

European practice and American theory concerning soil fertility /

by Hopkins, Cyril George
Published 1910

“...Circular, experiment-station, agricultural...”

Book

5

Shall we use "complete" commercial fertilizers in the corn belt? /

by Hopkins, Cyril George
Published 1912

“...Circular, experiment-station, agricultural...”

Book

6

Plant food in relation to soil fertility /

by Hopkins, Cyril George
Published 1912

“...Circular, experiment-station, agricultural...”

Book

7

Ground limestone for acid soils /

by Hopkins, Cyril George
Published 1912

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

8

Soil fertility : Illinois conditions, needs, and future prospects /

by Hopkins, Cyril George
Published 1912

“...Circular, experiment-station, agricultural...”

Book

9

Bread from stones /

by Hopkins, Cyril George
Published 1913

“...Circular, experiment-station, agricultural...”

Book

10

Crop rotation for Illinois soils /

by Hopkins, Cyril George
Published 1913

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

11

<<The>> Illinois system of permanent fertility /

by Hopkins, Cyril George
Published 1913

“...Circular, experiment-station, agricultural...”

Book

12

<<The>> duty of chemistry to agriculture /

by Hopkins, Cyril George
Published 1913

“...Circular / University of Illinois, College of Agriculture, Illinois Agricultural Experiment Station...”

Book

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