CARVALHO, L. C. C.; SILVA, F. M. DA; FERRAZ, G. A. E S.; SILVA, F. C. DA; STRACIERI, J. Spatial variability of soil physical attributes and agronomic characteristics of coffee grop. Coffee Science - ISSN 1984-3909, v. 8, n. 3, p. 265-275, 17 Jan. 2014.