00836cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035002000092040004700112042001200159050002200171082001100193100003100204245014500235260002300380300002700403440003600430500002700466504003300493650001300526650001400539999001700553gs 53000085 DLC20260227111359.0850617s1952    dcua     b   f000 0 eng c  ags 53000085   a(OCoLC)12166396  aU. S. Geol. Survey. Libr.cTxHRdTxHRdDLC  apremarc00aQE75b.C5 no. 225  a553.491 aFleischer, Michael,d1908-10aGeochemical association of niobium (columbium) and titanium and its geological and economic significance,cby Michael Fleischer [and others]  aWashington,c1952.  a13 p.btables.c27 cm. 0aGeological Survey circularv225  aErratum slip inserted.  a"Literature cited": p. 9-10. 0aNiobium. 0aTitanium.  c28718d28718