Haverroth, M. and Negreiros, P.R.M. 2012. The agricultural calendar, agro-biodiversity and spatial distribution of the Kulina (Madija) clearings, Upper Envira River, Acre, Brazil. SITIENTIBUS série Ciências Biológicas. 11, 2 (Mar. 2012), 299–308. DOI:https://doi.org/10.13102/scb77.