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Date: 2010-12-01 23:44:33 Byrrhoidea 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 List Source URL: www.gpo.gov Download Document from Source Website File Size: 1,67 MB Share Document on Facebook