Lead isotopes distribution and variability in two ice accumulations from Montes de Valnera (Burgos, Spain) - Sánchez, Lorenzo; Garralón, Antonio; Turrero, Maria Jesús; Ortega Martínez, Ana Isabel; Gómez, Paloma; Martín-Merino, Miguel Ángel; Martín Chivelet, Javier (2022)