TY  - BOOK
AU  - Hess,Frank L.
TI  - Cobalt, Molybdenum, Nickel, Tantalum, Titanium, Tungsten, Radium, uranium and vanadium in 1921
PY  - 1922///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
N1  - Impreso; En biblioteca 2 ejemplares
ER  -