Chemicals humus, and the soil : a simple presentation of contemporary knowledge and opinions about fertilizers, manures and soil fertility
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| Format: | Book |
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London :
Faber and Faber ,
[19__?]
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Add Tag | Physical Description: | 273p. : ill. ; 22cm |
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| Bibliography: | Index: pp 277-8. |
Humus : origin, chemical composition and importance in nature