RT Journal Article SR Electronic(1) A1 Parreira, Ubiratan A1 Carlos P. Portela, AntonioYR 1989 T1 AEROGAMMASPECTROMETRIC SURVEY MAP OF BRAZIL JF , VO OP SP cp-317-00182 DO https://doi.org/10.3997/2214-4609-pdb.317.sbgf188 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.317.sbgf188