ouvrage

Diagnostic criteria for plants and soils

H. Chapman | [Berkeley] : University of California, Division of Agricultural Sciences, Agricultural Experiment Station, Extension Service | 1966

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The U.C. system for producing healthy container-grown plants : through the use of clean soil, clean stock, and sanitation

K. Baker, Editeur scientifique ; P. Chandler, Auteur | [Berkeley] : University of California, Division of Agricultural Sciences, Agricultural Experiment Station, Extension Service | California Agricultural Experiment Station and California Agricultural Extension Service. Manual 23 | 1957

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