马伯特(Marbut)是美国土壤学奠基者,他提出美国第一个土壤分类系统仍体现了土壤发生学观点,但其基本分类单元土系是以土壤形态为核心。
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"I don't think the assault rifle ban, the semi-auto ban, has been the real objective, " said Gary Marbut of the Montana Shooting Sports Association.
NPR: Pro-Gun Voters Put Heat On Democratic Senators
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