Digital Data Sets of Depth-Duration Frequency of Precipitation for Oklahoma, USGS OFR 99-463.
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资源简介：
This data set consists of digital county boundaries for
Oklahoma. The boundaries were derived from U.S. Geological
Survey 1:100,000-scale Digital Line Graph data sets. Two
attributes are associated with each county polygon. The first is
the FIPS code and the second is the county name.
创建时间：
2016-10-29
