Owen, Alan W. <br/><br/>
Rare earth element geochemistry of upper Ordovician cherts from the Southern Uplands of Scotland 

 - London  Geological Society of London  January 1999 
 - pp. 191-204  ilus., mapa, tbls. 
<br/><br/><label>ISSN: </label>0016-7649 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CHERT<br/>GEOQUÍMICA<br/>ORDOVICICO<br/>TIERRAS RARAS
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESCOCIA