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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1977 May 01. 74(5), 1913-1917.
تفاصيل العنوان
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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1978 Apr 01. 75(4), 1727-1730.
تفاصيل العنوان
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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1977 Jan 01. 74(1), 149-153.
تفاصيل العنوان
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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1977 Feb 01. 74(2), 552-555.
تفاصيل العنوان
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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1984 Jul . 81(14), 4358-4362.
تفاصيل العنوان
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Source:
Proceedings of the National Academy of Sciences of the United States of America, 1978 May 01. 75(5), 2122-2124.
تفاصيل العنوان