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Vitamin B12; Microbiological Assay Methods and Distribution in Selected Foods

Harold LichtensteinAram BeloianElizabeth W. Murphy

出版	Nutrition Research Division, U.S. Agricultural Research Service, 1961
URL	http://books.google.com.hk/books?id=f4M-AAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN