Publicado por Divisao de Fomento da Producao Mineral, Republica dos Estados Unidos do Brasil Bol. 85, 1950, 80 pp. + 4 plates in pocket., 1950
Librería: Eryops Books, Stephenville, TX, Estados Unidos de America
Soft Cover. Condición: Good. ORIGINAL PUBLICATION; Softcovers; ex-library; minor shelfwear w/ head and tail of spine and corners lightly bumped; small portion of paper covering perished at head and heel of spine; o/w in good condition.