Between 1997 and 2002, four of the 9 counties in south Texas posted sizable gains in the market value of agricultural products, in the ensuing years of 2002–2007 and 1997–2007 the gains in the value of farm products sold were quite significant in 8 of the 9 counties.
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The applications of GIS in the analysis of the impacts of human activities on south Texas watersheds.
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