Correlation of the South American Silurian rocks / 
Edited by W. B. N. Berry and A. J. Boucot, with articles contributed by Arturo J. Amos and others 
 - Boulder, Colo. :  Geological Society of America,  1972 
 - v, 59 p. :  2 maps (in pocket) ;  23 cm. 
 - Special papers (Geological Society of America) no.133 .
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0813721334 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Silurian<br/>Stratigraphic correlation--South America