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The Use of Artificial Light and Reduction of the Daylight Period for Flowering Plants in the Greenhouse

C. W. EllenwoodGlen William McCuenGlenn Scott RayGustav Henry PoeschJames Sheldon ShoemakerPhil Sheridan EckertRobert Mumford SmockRobert Mundhenk SalterWayne Lewis Robison

出版	Ohio Agricultural Experiment Station, 1935
URL	http://books.google.com.hk/books?id=WsxPAQAAMAAJ&hl=&source=gbs_api