Qualitative and quantitative analysis of ephedra alkaloids in ephedrae herba by carbon-13 nuclear magnetic resonance.
1979 ◽
Vol 27
(1)
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pp. 43-47
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1988 ◽
Vol 36
(5)
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pp. 953-957
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2013 ◽
Vol 102
(1)
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pp. 154-161
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1975 ◽
Vol 97
(13)
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pp. 3565-3573
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