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Date: 2010-12-01 23:44:33Byrrhoidea Hydrology Guadalupe River Geology of Texas Stygoparnus Heterelmis comalensis Stygobromus pecki Comal Springs Edwards Aquifer Geography of Texas Texas San Marcos Texas | Add to Reading ListSource URL: www.gpo.govDownload Document from Source WebsiteFile Size: 1,67 MBShare Document on Facebook |