Sao Paulo: Editora Brasiliense s.a. 1982. Paperback. 77p., line map and a few photographs (kids drilling; guarding a pipeline; &c), second edition paperbound in 6x4.5 inch glossy wraps. Mild signs of handling, a good copy. A concise introductory by a 27-year-old journalist. First edition was 1981 Tudo e historia 21.