Dorr, John Van N.  1910- <br/><br/>
Physiographic, stratigraphic and structural development of the Quadrilatero Ferrifero Minas Gerais, Brazil / 
by John Van N. Dorr 2d ; prepared in cooperation with the Departamento Nacional da Producao Mi neral of Brazil under the auspices of the Agency for International Development of the United States Department of State. 
 - Washington:   United States Government Printing Office,   1969.  
 - v, A110 p. :  ill., maps, tables ;  29 cm. 
 -  614 Regional Geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil .
<br/><br/>Includes bibliographical references (p. A104-A105) and index (p. A107-A110). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological survey--Brazil
<br/><br/><label>Dewey Class. No.: </label>551