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      Cover image for Soil Fertility and Permanent Agriculture
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      Soil Fertility and Permanent Agriculture

      Cyril George Hopkins

      This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

      This work is in the "public…

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      Cover image for Soil Fertility and Permanent Agriculture
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      Soil Fertility and Permanent Agriculture

      Cyril George Hopkins

      This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

      This work is in the "public…

      $66.99

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      Cover image for University of Illinois Agricultural Experiment Station Bulletin No. 94
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      University of Illinois Agricultural Experiment Station Bulletin No. 94

      Cyril George Hopkins

      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 soils, has…

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      The Story of the Soil from the Basis of Absolute Science and Real Life,

      Cyril G (Cyril George) Hopkins

      This book is part of the TREDITION CLASSICS. It contains classical literature works from over two thousand years. Most of these titles have been out of print and off the…

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

      This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either…

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

      This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either…

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

      This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either…

      $44.99

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      Cover image for Soil Fertility Laboratory Manual
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      Soil Fertility Laboratory Manual

      Cyril George Hopkins,James Harvey Pettit

      This book, Soil fertility laboratory manual, by Cyril George Hopkins, James Harvey Pettit, is a replication of a book originally published before 1910. It has been restored by human beings…

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      Cover image for Alfalfa on Illinois Soil
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      Alfalfa on Illinois Soil

      This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.

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      Cover image for Alfalfa on Illinois Soil
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      Alfalfa on Illinois Soil

      This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.

      This work is in the public…

      $54.99

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      Cover image for Summary of Illinois Soil Investigations
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      Summary of Illinois Soil Investigations

      Cyril George Hopkins, Jeremiah George Mosier, Frederick Charles Bauer

      A detailed survey of the soil types and fertility levels in Illinois, based on extensive field experiments and laboratory analyses. This summary, authored by a team of soil science experts…

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      Cover image for For Better Crops (1911)
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      For Better Crops (1911)

      Cyril G Hopkins,Willet Martin Hays,Perry Greeley Holden

      Also By Joseph Elwyn Wing, L. W. Brown, Waldo Franklin Brown, Leon Wilson Chase, T. Chase, M. R. Shaw, Thomas Shaw, M. R. D. Owings, And J. E. Buck.

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      Cover image for For Better Crops
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      For Better Crops

      Cyril George Hopkins

      This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the…

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      For Better Crops (1911)

      Cyril G Hopkins,Willet Martin Hays,Perry Greeley Holden

      Also By Joseph Elwyn Wing, L. W. Brown, Waldo Franklin Brown, Leon Wilson Chase, T. Chase, M. R. Shaw, Thomas Shaw, M. R. D. Owings, And J. E. Buck.

      $78.99

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      Cover image for Laboratory Manual for Soil Fertility
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      Laboratory Manual for Soil Fertility

      James Harvey 1876-1914 Pettit

      This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.

      This work is in the public…

      $38.99

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