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Descriptions of Types of Principal American Varieties of Red Garden Beets

Roy MagruderUnited States. Department of AgricultureVictor R. Boswell

出版	U.S.D.A., 1939
URL	http://books.google.com.hk/books?id=eicCzQEACAAJ&hl=&source=gbs_api

註釋

Important considerations in comparing beet varieties or strains with type descriptions or standarts; Influence of environmental on plant and varietal characteristics; Distinguishing varietal characteristics; Classification of principal American varieties of red garden beets.