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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, Ingrid Hehmeyer, Anne Regourd, और Hannelore Schönig. Herbal Medicine in Yemen: Traditional Knowledge and Practice, and Their Value for Today's World. Leiden ; Boston: Brill, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, et al. Herbal Medicine in Yemen: Traditional Knowledge and Practice, and Their Value for Today's World. Brill, 2012.
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