Brazil : integrated development of the northwest frontier. - Washington, D.C. : World Bank (WB) , 1981 - vi, 101p. ; ill. ; 28 cm. - A World Bank country study . Includes bibliographical references and index. Subjects--Topical Terms: Regional planning--BrazilEconomic conditions--Rondônia (Brazil)Economic conditions--Mato Grosso (Brazil : State) Gov. Doc. Class. No.: UN WB CS (BR)