Hansen,Wallace R. <br/><br/>
Suggestions to authors of the reports of the United States Geological Survey 

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 - Washington - EEUU  U.S.Government Printing Office  1991 
 - 289p.  Bordeau 28cm 
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<br/><br/><label>ISBN: </label>no 
<br/><br/><label>Subjects--Topical Terms: </label>--Instrucciones para autores de Reports of the U.S.Geological Survey--Geologia--<br/>Geologia