Rein, Bert In-situ reflectance spectroscopy - analysing techniques for high-resolution pigment logging in sediment cores - Berlin Springer-Verlag October 2002 - pp. 950-954 ilus. Subjects--Topical Terms: ESPECTROSCOPIAMATERIALES TERRIGENOSSONDEO DE POZOSTESTIGOS Subjects--Geographic Terms: PERU Subjects--Index Terms: EL NIŅO