TY  - BOOK
AU  - Sisco,F.T.
AU  - Epremian,E.
TI  - Columbium and tantalum
U1  - 547.05526 
PY  - 1963///
CY  - N.Y.
PB  - John Wiley
KW  - Chemistry and Allied Sci
KW  - Chemistry and Allied Science
ER  -