1961, Min. Agric. Brasil, Div. Geol. Miner. Monogr. XVIII; 197 pp. 33 fig. plts. w. 59 phot. & 22 microphot. 1 fold. & col. geol. map 1:10.000. Orig. wrps. top of spine repaired with tape, small libr. sticker taped to base of spine, contents very good, lg4to.