[1]
Sánchez P., M., Horn, S.P. and Lane, C.S. 2019. Stable carbon and nitrogen isotope ratios of surface food residues in pre-Columbian ceramics from the southern Pacific of Costa Rica as evidence of prehistoric human diets. UNED Research Journal. 11, 2 (Feb. 2019), 89–97. DOI:https://doi.org/10.22458/urj.v11i2.2121.