2 电子书 Raymond B. Keller
Raymond B Keller: Flavonoids
Flavonoids, also referred to as bioflavonoids, are polyphenol antioxidants found naturally in plants. They are secondary metabolites, meaning they are organic compounds that have no direct involvemen …
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€276.70
Abraham Quinn: NASA Security and Export Control
Weaknesses in the National Aeronautics and Space Administration (NASA) export control policy and implementation of foreign national access procedures at some centers increase the risk of unauthorized …
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€122.33