https://www.studentresearchfoundation.org/wp-content/uploads/2021/07/SRF_Logo_New2-1030x314.png00Josef Katzhttps://www.studentresearchfoundation.org/wp-content/uploads/2021/07/SRF_Logo_New2-1030x314.pngJosef Katz2019-02-08 18:57:342019-02-08 18:59:19Water erosion Study the Colorado River
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