TY  - BOOK
AU  - Clarke,Frank Wigglesworth
TI  - The constitution of the natural silicates
T2  - U.S. Geological survey. Bulletin 588
AV  - QE75 .B9 no. 588
PY  - 1914///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Silicates
N1  - Includes index
ER  -