Surface water quality database for five watersheds in the Arequipa region of Southern Peru oleh Molly Noel Rymes, Rebecca Rasmussen, Pablo A. Garcia-Chevesich, Katie Burgert, Jean Long, Elsie McBride, Gisella Martínez, Kattia Martínez, Teresa Tejada, Kyle E. Murray, Gary Vanzin, Jonathan O. Sharp, John E. McCray