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Studies on Head Lettuce (Lactuca Sativa L.) Seed Yield, Quality and Physiological Necrosis (Red Cotyledon)

Hassan Abdalla Izzeldin

出版	University of California, Riverside, 1978
URL	http://books.google.com.hk/books?id=FR9c9q2nG_cC&hl=&source=gbs_api