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Photoperiodism in Relation to Hydrogen-ion Concentration of the Cell Sap and the Carbohydrate Content of the Plant

Wightman Wells GarnerCharles Walter BaconHarry Ardell Allard

出版	U.S. Government Printing Office, 1924
URL	http://books.google.com.hk/books?id=IcKkKAAACAAJ&hl=&source=gbs_api