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1 Year 3 Summary Report: Baseline Selenium Monitoring of Agricultural Drains Operated by the Imperial Irrigation District in the Salton Sea Basin 未开放资源 机器抓取
  This report summarizes findings from the third year of a 4-year-long field investigation to document selected baseline environmental conditions in 29 agricultural drains and ponds ...
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2 Yearly variations in runoff and frequency of dry years for the conterminous United States, 1911-79 开放资源 机器抓取
  Gaging-station data are presented on variations in annual runoff over the conterminous United States and nearby Canada during the period 1911-79 in tabular and graphic (map) form. ...
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3 Yellow-Billed Cuckoo Distribution, Abundance, and Habitat Use Along the Lower Colorado and Tributaries, 2006 Annual Report 未开放资源 机器抓取
  Executive Summary This 2006 annual report details the first season of a 2-year study documenting western yellow-billed cuckoo (Coccyzus americanus occidentalis) distribution, abund...
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4 Yellow-billed Cuckoo Distribution, Abundance, and Habitat Use Along the Lower Colorado River and Its Tributaries, 2007 Annual Report 未开放资源 机器抓取
  This 2007 annual report details the second season of a 2-year study documenting western yellow-billed cuckoo (Coccyzus americanus occidentalis) distribution, abundance, and habitat...
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5 Yellowstone plume head; postulated tectonic relations to the Vancouver Slab, continental boundaries, and climate 未开放资源 机器抓取
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6 Yellowstone; restless volcanic giant 开放资源 机器抓取
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7 Yield of the Carpinteria and Goleta ground-water basins, Santa Barbara County, California, 1941-58 未开放资源 机器抓取
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8 YoNav; your own integrated navigation system for DOS platforms 开放资源 机器抓取
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9 Yosemite Quadrangle, Central Sierra Nevada, California -- Analytic Data 未开放资源 机器抓取
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10 Young faults 开放资源 机器抓取
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