TY  - BOOK
AU  - Hess,Frank Lee
AU  - Schaller,Waldemar T.
TI  - Colorado ferberite and the wolframite series,
T2  - U.S. Geological survey.  Bulletin 583
AV  - QE75 .B9 no. 583
PY  - 1914///
CY  - Washington
PB  - Govt. print. off.
KW  - Ferberite
KW  - Wolframite group
N1  - Bibliography: p. 74-75
ER  -