Sherlock, R. L. <br/><br/>
The permo-triassic formations. 

 - London :  Hutchinson's Scientific and Technical Publications,  1947. 
 - 367 p. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estratigrafía<br/>Permico<br/>Triásico
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>551.736/.761