Castorina, Francesca, and Umberto Masi. 2010. “COMPARISON OF Sr ISOTOPIC RATIOS FROM TWO SOILS NEAR RAVENNA (ITALY) USING AQUA REGIA AND TWO-STEP SEQUENTIAL EXTRACTS”. EQA - International Journal of Environmental Quality 4 (4):7-14. https://doi.org/10.6092/issn.2281-4485/3796.