遇见数据集

National Extension Water Quality Database

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The "National Extension Water Quality Database" provides Cooperative Extension Staff online computer access to educational resources for water quality developed by the Cooperative Extension Service across the United States. Types of educational resources include slide sets, video tapes, and computer software. New data (documents) are added weekly. All documents, slide sets, video tapes, and computer software has been prepared and approved for use in the individual state Extension Service. Citations are collected by project managers at Purdue University by contacting the Extension Water Quality Coordinator in each state extension service. Collection Organization: Cooperative Extension Service. Collection Methodology: Citations were collected by project managers at Purdue University by contacting the Extension Water Quality Coordinator in each state extension service. Collection Frequency: New data (documents) are added weekly. Update Characteristics: It is not updated in its entirety. STATISTICAL INFORMATION: 1750 citations. More than 150 actual documents. LANGUAGE: English ACCESS/AVAILABILITY: The data set includes 2,670 citations with more than 1,000 actual documents. The National Extension Water Quality Database may be accessed online, via the internet or through a modem. If using internet, then telnet hermes.ecn.purdue.edu; login as cerf, password: purdue. If using a modem, then dial 1-317-494-8350 Login as demo and follow instruction. Also, this database may be accessed via the WWW at: 'http://hermes.ecn.purdue.edu:8001/water/water.html'

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