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1Academic Journal
المؤلفون: Wiemels, Joseph L., Smith, Rosalyn N., Taylor, G. Malcolm, Eden, Osborn B., Alexander, Freda E., Greaves, Mel F.
المصدر: Proceedings of the National Academy of Sciences of the United States of America, 2001 Mar . 98(7), 4004-4009.
URL الوصول: https://www.jstor.org/stable/3055360