Ahrens,L.H. <br/><br/>
Radioactive methods for determining geological age 

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 - London - INGL    1956 
 - 26p.  24cm 
 - Report on progress in physics   v.19 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Metodos radioactivos--Edad geologica--Fisica--<br/>Geologia