Magnússon, Rúna Influence of glacial sediments on the chemical quality of surface water in the Ulta valley, Cordillera Blanca, Peru - Amsterdam Elsevier August 2020 - 16 p. ilus. ISSN: 0022-1694 Subjects--Topical Terms: CALIDAD DEL AGUAMORRENASEDIMENTOS GLACIARES Subjects--Geographic Terms: ANDESANCASHCORDILLERA BLANCAPERU