Principal Components Analysis of the management of traditional varieties variation of native tubers among traditional farmers. Cajamarca and Huánuco. The farmers with the prefix C are from Cajamarca and those with the prefix H are from Huánuco.
Velásquez-Milla et al. Journal of Ethnobiology and Ethnomedicine 2011 7:40 doi:10.1186/1746-4269-7-40