Birch, Francis <br/><br/>
Differentation of the mantle 

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 - USA    1958 
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 - Bulletin of the Geol. Soc. of America   v.69 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Estructura--Tierra--<br/>Geologia