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0200007424 20020816152244.0 020816s maua fr |00||||eng CNY494.55 NGL a631 ; a370 根据侧向扫描声纳和高分辨率地震反射调查米德湖西部地表地质后蓄水沉积物的分布研究. chi Surficial geology and distribution of post-impoundment sediment of the western part of Lake Mead based on a sidescan sonar and high-resolution seismic-reflection survey / David C. Twichell ... [et al.]. Woods Hole, MA : U.S. Geological Survey, 1999. 27 p. : ill. ; 28 cm. Open-File Report ; 99-581 Seismic survey. ; Sediments. aTwichell, David C. Open-File Report / U.S. Geological Survey ; 99-581. aCN bNGL NGL EB00062893 r¥494.55 370 T92 ayl b1 eyl07