Antonucci, F., Manganiello, R., Costa, C., Irione, V., Ortenzi, L. and Palombi, M.A. 2020. A quantitative multivariate methodology for unsupervised class identification in pistachio (Pistacia vera L.) plant leaves size. Spanish Journal of Agricultural Research. 18, 4 (Dec. 2020), e0208. DOI:https://doi.org/10.5424/sjar/2020184-16904.