Fleischer, Michael,  1908- <br/><br/>
Geochemical association of niobium (columbium) and titanium and its geological and economic significance, 
by Michael Fleischer [and others] 
 - Washington,  1952. 
 - 13 p.  tables.  27 cm. 
 - Geological Survey circular  225 .
<br/><br/> Erratum slip inserted. 
<br/><br/>"Literature cited": p. 9-10. 
<br/><br/><label>LCCN: </label>gs 53000085  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Niobium.<br/>Titanium.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 no. 225 
<br/><br/><label>Dewey Class. No.: </label>553.49