XII International Congress on Carboniferous and Permian Geology and Stratigraphy :  Abstracts. 

 - Buenos Aires :  Museo Arg.Cs.Ns."B.Rivadavia",  1991. 
 - 104 p. ;  26 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sistemática de estratigrafía<br/>Carbonífero<br/>Permico
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Actaconf
<br/><br/><label>Universal Decimal Class. No.: </label>H 061.3:551.7