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The U. C. System for Producing Healthy Container-grown Plants Through the Use of Clean Soil, Clean Stock, and Sanitation

William Jay. Kenneth Frank Baker

出版	U. of California, Division of Agricultural Sciences, Agricultural Experiment Station, Extension Service, 1972
URL	http://books.google.com.hk/books?id=puuhngEACAAJ&hl=&source=gbs_api